How do I create a domain ?

http://www.2createawebsite.com/prebuild/register_domain.html

There's any number of registrars on the net.
web domain - Google Search (http://www.google.co.uk/search?client=firefox-a&rls=org.mozilla%3Aen-GB%3Aofficial&channel=s&hl=en&q=web+domain&meta=&btnG=Google+Search)