Go to an official Internet registrar online. See here : http://creativewebhosting.myorderbox.com/
Enter the name or phrase of the domain name you would like to register. Follow the rules regarding name length and format.
Search for the name.
If the name is already taken, enter a new name and search again until you find one that is still available. If you tried .com as a suffix, try .org or .net instead.
Register the domain name.
Pay the filing fee online or through the mail, following the instructions on the Web site.