Some times Registry is disabled in Xp due to virus or whatever... Here is a way u can re enable it
u must be Admin not a limited user on ur machine for this.


Goto run type gpedit.msc
hit enter
now on left pane select User configuration
then select Administrative templates
then select system
now look on right pane
Double click on Prevent acess to Registry editing tools option
select option Disabled
click OK
thats all Registry will be enabled.

There are a few tricks to speed up Firefox. Check them out below:

1. Open Firefox.
2. Type about:config in the address bar and press Enter.

HTTP PIPELINING

HTTP is the application-layer protocol that most web pages are transferred with. In HTTP 1.1, multiple requests can be sent before any responses are received. This is known as pipelining. Pipelining reduces page loading times, but not all servers support it.

In the filter bar type network.http.pipelining. Make sure under the value field is says true. If not double-click to set it
Return to the filter bar and type network.http.pipelining.maxrequests. Double-click this option and set its value to 8.
-------------------------------------------------------------------------------------------------
HTTP PROXY

Go to the filter bar and type network.http.proxy.pipelining. Once it opens double-click it to set it to true.
-------------------------------------------------------------------------------------------------
Type network.dns.disableIPv6 in the filter bar and set this option to true by double clicking on it
-------------------------------------------------------------------------------------------------
CONTENT INTERRUPT PARSING

This preference controls whether the application will interrupt parsing a page to respond to UI events. It does not exist by default.
Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Boolean from the pop-up menu.


Enter content.interrupt.parsing in the New boolean value pop-up window and click OK.


You will be prompted to choose the value for the new boolean. Select true and click OK.
-------------------------------------------------------------------------------------------------
CONTENT MAX TOKENIZING TIME

Rather than wait until a page has completely downloaded to display it to the user, Mozilla applications will periodically render what has been received to that point. This preference controls the maximum amount of time the application will be unresponsive while rendering pages.
Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.

Enter content.max.tokenizing.time in the New integer value pop-up window and click OK.

You will be prompted to enter a value. Enter 2250000 and click OK.
-------------------------------------------------------------------------------------------------
CONTENT NOTIFY INTERVAL

This preference specifies the minimum amount of time to wait between reflows. Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.

Enter content.notify.interval in the New integer value pop-up window and click OK.
You will be prompted to enter a value. Enter 750000 and click OK.
-------------------------------------------------------------------------------------------------
CONTENT NOTIFY ONTIMER

This preference specifies whether to reflow pages at an interval any higher than that specified by content.notify.interval. Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Boolean from the pop-up menu
Enter content.notify.ontimer in the New boolean value pop-up window and click OK.
You will be prompted to choose the value for the new boolean. Select true and click OK.
-------------------------------------------------------------------------------------------------
CONTENT NOTIFY BACKOFFCOUNT

This preference controls the maximum number of times the content will do timer-based reflows. After this number has been reached, the page will only reflow once it is finished downloading. Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.
Enter content.notify.backoffcount in the New integer value pop-up window and click OK.
You will be prompted to enter a value. Enter 5 and click OK.
-------------------------------------------------------------------------------------------------
NGLAYOUT INITIALPAINT DELAY

Mozilla applications render web pages incrementally - they display what's been received of a page before the entire page has been downloaded. Since the start of a web page normally doesn't have much useful information to display, Mozilla applications will wait a short interval before first rendering a page. This preference controls that interval. Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.
Enter nglayout.initialpaint.delay in the New integer value pop-up window and click OK.
You will be prompted to enter a value. Enter 0 and click OK.
-------------------------------------------------------------------------------------------------
UI SUBMENU DELAY

This preference controls the time a menu takes to open a sub-menu. Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.
Enter ui.submenuDelay in the New integer value pop-up window and click OK.
You will be prompted to enter a value. Enter 0 and click OK.
-------------------------------------------------------------------------------------------------
PLUGIN EXPOSE FULL PATH

This preference shows full path to plugins in about:plugins. Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Boolean from the pop-up menu.
Enter plugin.expose_full_path in the New boolean value pop-up window and click OK.
You will be prompted to choose the value for the new boolean. Select true and click OK.
-------------------------------------------------------------------------------------------------
BROWSER CACHE MEMORY CAPACITY

When a page is loaded, it can be cached so it doesn't need to be rerendered to be redisplayed. This preference controls the maximum amount of memory to use for caching decoded images and chrome (application user interface elements). Right-click (Apple users ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.
Enter browser.cache.memory.capacity in the New integer value pop-up window and click OK.
You will be prompted to enter a value. Enter 65536 and click OK.

Now u need to Restart Firefox to make affects.

Goto Run type gpedit.msc hit enter

Now on left pane double click User Configuration

Now on left pane double click Administrative Templates

Now double click on Desktop in left pane

Now in right pane double click on option Hide and disable all items on desktop.

Select Enabled when a pop up window comes

click OK thts all....

You need to be Administrator for on ur machine

Goto Run type gpedit.msc hit enter

Now on left pane double click User Configuration

Now on left pane double click Administrative Templates

Now double click on Start menu and Taskbar option in left pane

Now on right pane double click on Remove and Prevent access to Shutdown command

select Enabled when a wondow pops up.

Click OK...

First of all it is not virus but it is modified and then used by virus. Autorun.inf is the primary instruction file associated with the Autorun function. Autorun.inf itself is a simple text-based configuration file that tells the operating system which executable to start, which icon to use, and which additional menu commands to make available.
eg: whenever we insert CD/DVD a small window pops up and asks what action to take it is basically done by autorun.inf file. now the virus simply modifies it so that it executes the virus intentionally.
Here is a way to manually remove it if antivirus fails. type the following code in notepad :

cd\
c:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
d:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
e:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
f:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
g:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
h:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
i:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
j:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
k:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
l:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf
m:
attrib -r -s -h autorun.inf
del /q /f /s autorun.inf

u can also change the code depending upon the drive letters u have in this code drive letters included are c,d,e,f,g,h,i,j,k,l,m u can add or reduce some.
Now save the file with name Clean.bat now click it to remove the autorun.inf file.
Basically this code will unhide the autorun.inf files and then delete them.

Here is the way to do so :

Create sandbox account

Follow this link (http://code.google.com/support/opensocialsignup/)

And sign up & ur account is added to developers account

After 3 days u get confirmation e-mail and then

Login to sandbox server for that type sandbox instead of www

http://sandbox.orkut.com

Now u can access anyones scrap (only)

1. Port 21 FTP port (used for all ftp based file transfer)
2. Port 22 SSH Server listening port
3. Port 23 Telnet port
4. Port 25 Smtp mail port
5. Port 42 WINS Replication port
6. Port 43 WHOIS port
7. Port 53 DNS port
8. Port 67 DHCP port
9. Port 79 ETRN Finger port-Finger command for SMTP mailservers
10. Port 80 HTTP port
11. Port 102 X.400 port
12. Port 110 POP3 port
13. Port 115 SFTP port- Secure File Transfer port
14. Port 119 Newsgroup port
15. Port 123 Network Time Protocol port
16. Port 135 RPC Locator service port (Remote Procedure Call)
17. Port 137 NetBIOS Name service port/WINS
18. Port 143 Internet Message Acess Protocol 4 port (IMAP4)
19. Port 161 Simple Network Management Protocol port (SNMP)
20. Port 179 Border Gateway Protocol port
21. Port 379 Site Replication Service port (SRS)
22. Port 389 Light Weight Directory Access Protocol port (LDAP)
23. Port 443 Secure HTTP traffic port (SSL port)
24. Port 445 Microsoft Active Directory & SMB Protocol port
25. Port 465 Google Mail Outgoing Mail Server
26. Port 636 LDAP over SSL
27. Port 993 Secure Internet Message Access Protocol port (Secure IMAP port)
28. Port 995 Google Mail Incoming POP3 Mail server (Gmail port)
29. Port 1026 Calendar Access Protocol port (CAP)
30. Port 1080 SOCKS/Online Chatting/Hotmail
31. Port 1090 Real Audio port
32. Port 1433 SQL Server & SQL server replication port
33. Port 1434 SQL sever Monitoring port
34. Port 1521 Default Oracle port
35. Port 1677 Novell Groupwise
36. Port 1071 Layer Two Tunnelling port
37. Port 1720 H.323 port
38. Port 1723 Point To Point Tunnelling Protocol port(PPTP port)
39. Port 1900 Media Center Extender - Xbox 360 port
40. Port 2409 SPAM Fighter Content Classification port
41. Port 3101 Balckberry Enterprise Server Syncronization port (BES)
42. Port 3306 Default MySQL port
43. Port 3389 Remote Desktop port and Terminal Services port
44. Port 3390 Media Center Extender -Xbox 360 port
45. Port 3535 GoDaddy Secure SMTP Relay port
46. Port 4321 RWHOIS port
47. Port 4664 Google Desktop Search port
48. Port 5190 AOL Instant Messenger port
49. Port 5500 DualDesk port
50. Port 5631 PCAnywhere 5631 TCP incoming port
51. Port 5632 PCAnywhere 5632 UDP incoming port
52. Port 5900 RealVNC Default Remote Control port
53. Port 7070 Real Streaming Audio port
54. Port 7100 Novell Groupwise
55. Port 8000 Mirra Personal Server Communications port
56. Port 8080 HTTP Internet traffic port
57. Port 8799 GPRS Internet Access Proxy port
58. Port 8880 CDDB port
59. Port 9100 Google Web Acceletrator port
60. Port 19430 Mirra Personal Server Directory port
61. Port 39720 LimeWire Communication port

So now here is way how to use Google to search the serials of Softwares, games etc. or any other stuff.
In order to search any serial just type in the in search bar in following manner :

94FBR Application's name 94FBR

here application's name is name of the stuff whose serial u need to search. for eg. if i need to search serial of winrar i'll type like this in Google search bar :

94FBR Winrar 94FBR

Basically the code 94FBR is used or denoting the serials so when we use that code then Google understands that it needs to search for the links that will contain the serials somewhere. So remember that the search result wont display serials on ur screen but the search result will provide u many links that could contain the serial.

Sometimes ur CD/DVD may not work due to scratches. But it contains ur important data then what to do ? this situations comes many times. So here is the way to how to make them work for u. Try at ur own responsibility :-

Clean the disc. Even if a CD isn’t actually scratched or scuffed, dust, oil, and other surface contaminants can prevent it from playing properly. Thus cleaning the disc should always be your first move.
1. Run warm water over the damaged disc to remove dust.
2. If there is stubborn dirt or grease on the disc, gently rub it with your finger while you are washing it, and use a gentle detergent or liquid soap (with the water) or rubbing alcohol (in place of water). Any time you rub or wipe a CD, you should do so by starting at or near the center of the disc and rubbing straight outward toward the edge to prevent further scratching.
3. Shake the water off and let the disc air-dry (do not dry it with a towel or cloth, and don't sun-dry it either).
Try to play the disc. Many times a good cleaning is all that is needed. If, however, problems persist after cleaning, try to play the disc in a different CD player. Some players handle scratches better than others; computer CD drives tend to be best.

If this doesn’t work, try to polish the disc :

1. If you have a lightly scratched CD, you can use toothpaste. Just put some toothpaste on the scratch and stretch it out with your fingers.

2. BRASSO™ is a good way to re-surface the disc. Just throw some BRASSO on the disc and rub in circular motion the disc with cotton.

3. Put Car Wax or Vasoline on the cd and rub it in. Then wipe it off. Some web pages say that you must let it dry, but I washed it. and its supposed to fix the scratches... This trick also works on scratches on car windows, etc.
For more search on www.google.com

So here is a way that can help u to elicit much information about any website.
Further it depends upon u how u use that info.
what u have to do it just open Google then in search bar type the following

site:www.example.com

here u replace example with name of website whose information u want. then hit enter now c carefully at search results they will be very helpful for hackers ;-)

i tried this following one and the amazing results.

site:www.hotmail.com

Here is the way but do at ur own risk. U must be Admin of ur machine.

Goto Run type regedit
Hit enter
Goto HKEY_CURRENT_USER\Software\yahoo\pager\Test
On right pane Right click and choose new Dwordvalue
Rename it as Plural
Double click it and assign Decimal value with 1
close registry
restart Yahoo messenger.

If it didnt worked try restart ur machine.
For signing in with new id open new messenger.

WARNING: Using secret codes may be harmful to your phone and result in disabling or worse. Use these codes at your own discretion, i accept no responsiblility for blocked phones while using these codes!!!
IMEI Number
*#06# Cells Identity Code (IMEI = International Mobile Equipment Identity) XXXXXX XX XXXXXX X TAC FAC SNR SP TAC = Type Approval Code (first 2 digits = country code of the approval-country ) FAC = Final Assembly Code: (01,02 = AEG) (10,20 Nokia) (40,41,44 Siemens) (30 Ericsson) (50 Bosch) (51 Sony,Siemens,Ericsson) (60 Alcatel) (65 AEG) (70 Sagem) (75 Dancall) (80 Philips) (85 Panasonic) SNR = Serial Nr. SP = Spare (always "0")----------------------------------------------------------------------------------------------------------------------------------------Software Version *#0000# shows the software version----------------------------------------------------------------------------------------------------------------------------------------Signal Processing
*3370# - Enchanced full Rate Codec (EFR) activation. It will automatically restart.
#3370# - Enchanced full Rate Codec (EFR) deactivation
*4720# - Half Rate Codec activation. It will automatically restart.
#4720# - Half Rate Codec deactivation Enchanced Full Rate will give you much better sound quality when you enable it. The new Enhanced Full Rate CODEC adopted by GSM uses the ASELP (AlgebraicCode Excitation Linear Prediction) compression technology. This technology allows for much great voice quality in the same number of bits as the older Full Rate CODEC. The older technology was called LPC-RPE (Linear Prediction Coding with Regular Pulse Excitation). Both operate at 13 kilobits.(but you take up more space on the network, so they can charge you more) - Talk-time is reduced with about 5%.----------------------------------------------------------------------------------------------------------------------------------------Sim Clock Stopping
*#746025625#
[*#sim0clock#] Checks if the sim clock can be stopped. Sim clock stop is a kind of stand-by mode which will save battery time. This code doesn't work with software version 4.59. It will tell you if it can be stopped or not.-------------------------------------------------------------------------------------------------Warranty Menu
*#92702689#
takes you to a secret menu with 6 choices: [*#war0anty#] 1. Displays Serial Number. 2. Displays the Month and Year of Manufacture (0997). 3. Displays (if there) the date where the phone was purchased (MMYY). 4. Displays the date of the last repairment - if found (0000). 5. Makes you capable of transferring user data if you have the gear for it. 6. Shows how long the phone has been used to talk. This counter is not reset by when you "clear timers" like the counters in the call register.-------------------------------------------------------------------------------------------------Bypass the SP lock With a Nokia 16xx/21xx/31xx/51xx/81xx
1. Insert SIM card of different provider.
2. Turn on the phone and press the UP VOLUME key for 3 sec. Then release it and the phone says PIN CODE?
3. Press the "C" key.
4. Then Press * and wait until it disappears and appears again, then press * one more time and 04*PIN*PIN*PIN#-------------------------------------------------------------------------------------------------Nokia Speed Trap Detector
Nokia Speed Trap Detector Urban Legend spread by Nokia Engineers ;^) The settings for radar speed traps detector. Your Nokia cell phone can be programmed to pick up radar speed traps, when programmed your cell phone picks up the radar and alerts you on the message alert tone. ( Doesn't work with Nokia 7110! )
1. Enter your menu
2. Select settings
3. Select security settings
4. Select closed user group
5. Select on
6. Enter 00000
7. Press ok
8. Clear back to normal, within a few seconds your phone will display a radar sign with five zero's next to it. It is now activated. Unfortunately only Nokia phones have this function. The Cell Phone info display needs to be de-activated. Settings -> Phone Settings -> Cell Info display. Each time you turn off your phone, or even each time you loose contact with your carrier, you'll have to activate it again... It is done using steps 1 through 5 above, but the number (00000) will be already on the field as a default.-----------------------------------------------------------------------------------------------------------------If you short-circuit the left middle and right pins on the bottom of the phone with all connections touching each other, the Nokia software hangs! The profile "Headset" will be activated. Before you do this just activate the "Automatic Answer" in the headset profile and set the ringing volume to "Mute". Now you can use your phone for checking out what people are talking about in a room. Just place it under a table in a room and call it. The phone receives the call without ringing and you can listen to what people are saying!-------------------------------------------------------------------------------------------------Network Monitor
There is a hidden menu inside your Nokia phone. If you want to activate it, you'll have to re-program some chips inside of your phone. Check your software version. You can only continue if you have v4.33, v4.73 or v5.24. Take apart the phone. De-solder the EEPROM (ATMEL AT 24C64) Read out the data with an EEPROM programmer and save it to a file (Backup) If you have v.33 or v4.73, change the address "03B8" from "00" to "FF" If you have v5.24 then change the address "0378" from "00" to "FF" Write the new data to the EEPROM and solder it back to the phone Power on your phone and you should have "Netmonitor" enabled. The Network Monitor gives you the following information: Carrier number, MS RX Level in DBM, Received signal quality, MS TX power level, C1 (Path loss criterion, used for cell selection and reselection). The range is -99 to 99, RTL (Radio link timeout), Timeslot, Indication of the transmitter status, Information on the Network parameters, TMSI (Temporary Mobile Subscriber Identity), Cell identification (Cell ID, Number of cells being used), MCC (Mobile country code), MCN (Mobile network code), LAC (Location area code), Ciphering (On/Off), Hopping (On/Off), DTX (On/Off), Discard cell barred information.-------------------------------------------------------------------------------------------------GSM Network Services Command Strings
When various network functions are selected via the cellphone's menu using the keypad, the cellphone automatically generates the corresponding GSM network command string and transmits it to the network. These commands can however be manually entered via the keypad.Each command is prefixed with either one or two * or # characters as follows:
** Register and Activate
* Activate
## De-Register (and Deactivate)
# Deactivate
*# Check Status
© Call button
Once each command has been entered, if it is a network command (as opposed to a local handset command) it must be transmitted to the network by pressing the YES (receiver) key which acts as an enter key - this is represented here with the © character. Always enter numbers in full international format +CountryAreaNumber (e.g. +447712345678). Command Description

Command String

Change call barring code **03*OldCode*NewCode*NewCode#©
Change call barring code **03*330*OldCode*NewCode*NewCode#©
Change PIN code **04*OldPIN*NewPIN*NewPIN#©
Change PIN2 code **042*OldPIN2*NewPIN2*NewPIN2#©
Unlock PIN code (when PIN is entered wrong 3 times) **05*PUK*NewPIN*NewPIN#©
Unlock PIN2 code (when PIN2 is entered wrong 3 times) **052*PUK2*NewPIN2*NewPIN2#©Display IMEI *#06#
Call Forwarding (Diversions) De-register all call diversions ##002#©
Set all configured call diversions to number and activate **004*number#©
De-register all configured call diversions (no answer, not reachable, busy) ##004#©Unconditionally divert all calls to number and activate **21*number#©
Activate unconditionally divert all calls *21#©
De-register unconditionally divert all calls ##21#©
Deactivate unconditionally divert all calls #21#©
Check status of unconditionally divert all calls *#21#©
Divert on no answer to number and activate **61*number#©
Activate divert on no answer *61#©
De-register divert on no answer ##61#©
Deactivate divert on no answer #61#©
Check status of divert on no answer *#61#©
Divert on not reachable to number and activate **62*number#©
Activate divert on not reachable *62#©
De-register divert on not reachable ##62#©
Deactivate divert on not reachable #62#©
Check status of divert on not reachable *#62#©
Divert on busy to number and activate /td> **67*number#©< Activate divert on busy *67#©De-register divert on busy ##67#© Deactivate divert on busy #67#©
Check status of divert on busy *#67#©
Change number of seconds of ringing for the given service before diverting a call (such as on no answer). Seconds must be a value from 5 to 30. De-registering the same divert will also delete this change! **service*number**seconds#© (Service numbers, see below)
Call barring Activate barr all outgoing calls (see Security to set code) **33*code#©
Deactivate barr all outgoing calls #33*code#©
Check status of barr all outgoing calls *#33#©
Activate barr all calls **330*code#©
Deactivate barr all calls #330*code#©
Check status of barr all calls /td> *#330*code#©
Activate barr all outgoing international calls **331*code#©
Deactivate barr all outgoing international calls #331*code#©
Check status of barr all outgoing international calls *#331#©
Activate barr all outgoing international calls except to home country **332*code#©
Deactivate barr all outgoing international calls except to home country #332*code#©
Check status of barr all outgoing international calls except to home country *#332#©
Activate barr all outgoing calls **333*code#©
Deactivate barr all outgoing calls #333*code#©
Check status of barr all outgoing calls *#333#©
Activate barr all incoming calls **35*code#©
Deactivate barr all incoming calls #35*code#©
Check status of barr all incoming calls *#35#©
Activate barr all incoming calls when roaming **351*code#©
Deactivate barr all incoming calls when roaming #351*code#©
Check status of barr all incoming calls when roaming *#351#©
Activate barr all incoming calls **353*code#©
Deactivate barr all incoming calls #353*code#©
Check status of barr all incoming calls *#353#©
Call waiting Activate call waiting *43*#©
Deactivate call waiting #43##©
Check status of call waiting *#43#©-----------------------------------------------------------------------------------------------------------------Calling Line Identification

The following only works if CLIP and CLIR are enabled (ask your service provider) CLIP: Presentation of the number of the incoming call Activate CLIP **30#©
Deactivate CLIP ##30#©
Check status of CLIP *#30#©
CLIR: Presentation of one's own number to the to the called party Activate CLIR **31#©Activate CLIR for the actual call *31#number©
Deactivate CLIR ##31#©
Deactivate CLIR for the actual call #31#number©
Check status of CLIR *#31#©

COLP: Presentation of the actual number reached (if number called was diverted to another number
Activate COLP *76#©
Deactivate COLP #76#©
Check status of COLP *#76#©

COLR: Presentation of the original number called by the calling party (if the call was diverted to this cellphone)
Activate COLR *77#©
Deactivate COLR #77#©
Check status of COLR *#77#©
Cellphone Services
10 All types of cellphone services
11 Speech service
12 Data service
13 Fax
14 Datex-J
15 Teletex
16 Short message service (SMS)
18 All data services without SMS
19 All cellphone services without SMS Carrier Services :
20 All services
21 All asynchronous services
22 All synchronous services
23 3.1kHz services
24 Synchronous point-to-point connections including PAD's (all synchronous data services)
25 Asynchronous point-to-point connections including PAD's (all asynchronous data services)
26 Data packet sending including PAD's (all synchronous data packet services)
27 Services with PAD-share
29 Digital connection with 12kbps-------------------------------------------------------------------------------------------------GSM Network Service Codes

Note that at present only the following service codes are in use:
11 Speech
13 fax
25 data-------------------------------------------------------------------------------------------------Cell Broadcast
While Short Message Service (SMS) can be configured as a personal service, Cell Broadcast is a general service which is designed for subscribers of a specific cell or topic. For example, a subscriber to cell 050 in England will receive information on the GSM tower currently being used by their phone. This new concept brings a whole new meaning to the term mobile communications as the phone is now able to receive information such as share prices or weather updates without the need of data cards and computers. At present the following message types exist (note: this may vary from carrier to carrier and some carriers may charge for this service).-------------------------------------------------------------------