Choose words that are easy to spell. Don't use dashes or other symbols. Spaces are not allowed in domain names. And of course, it must not be in use by anyone else. You can check for domain name availability at the InterNIC site.
Registration is handled in the USA by InterNIC .
The ability to conduct secure financial transactions from a web site. A site that is commerce enabled is one that allows a visitor to purchase products or services and make payment on-line using a credit card. Your web site must physically reside on a computer that's connected to the internet. Web hosting companies provide the equipment, a high-speed connection to the internet and monitor your site to make sure it is always available. Hosting companies typically charge a one-time setup fee in addition to the monthly hosting fee.