Now that you understand the theory behind the Domain Name System, we can attend to more practical matters. Before you set up your zones, you may need to get name server software. While a name server is included as a standard part of Windows Server 2003, you may want to look at alternatives. Once you've got the software to run your name server, you need to decide on a domain name for your main zone which may not be quite as easy as it sounds, because it entails finding an appropriate place in the Internet namespace. With that decided, you need to contact the administrators of the parent of the zone whose domain name you've chosen.
One thing at a time, though. Let's talk about how to decide on name server software and where to get it.