You can register a domain name by going to anyone of the worldwide domain name registrars. Whether you are able to register your domain with a specific name depends on a number of factors; the most important of them being the availability of the domain name. Domain name you have selected should be available in that moment.That means may be you can't get what you exactly want.Some of the widely used domain name registrars are:

http://www.hostway.com
http://www.namesecure.com
http://www.godaddy.com and there's lots of domain registrars in world wide.

The cost for registering a domain name might differ from one registrar to another. However, you must check different prices charged by various domain name registrars before settling for one.

Domain name being such an important aspect of your website calls for meticulous consideration of a few factors such as:

• Consider some key factors such as terms, length of service, and price per service package while registering a domain name. You should always choose a service package that suits your existing and future needs even if it cost high in stead of settling for a cheaper service package that could prove costly in the long run.

• Choose a domain name that should contain either you own product or company’s name. This will not only ensure that your opted domain name is available but also enhance the brand awareness of your product.

• From SEO (Search Engine Optimization) standpoint, you should consider including the targeted keyword in your domain so that it will be search engine friendly which in turn will immensely benefit your website from SEO perspective.

Registering your domain name on a dedicated IP server is always recommended as it will offer you better credibility from search engines. Domain names hosted on shared IP servers stand the risk of being blacklisted incase anyone of the other subscribers engages in some unethical SEO practices.