During the registration process you will be asked where you want the domain name to "point." This is the IP address of the server where your Web site will be located and there should be a primary and secondary server. You can obtain this information from your Web hosting company. There may also be a listing for other optional servers. The registrar may provide the IP addresses of at least two delegated name servers on their site. You can change this if you have your own. It can also be changed later if you change servers. It should take 48-72 hours for your domain name to be set-up and available via the Web.