To set up Active Directory and set this server up as a domain controller, Windows needs the following information: What do you want to name your domain? For example, use your group name — such as "headquarters" or "marketing": Type in the domain name you have registered on the Internet — for example, microsoft.com. Type local if you don't have a public domain name:

Preview of Active Directory domain name:

Preview of down-level (Windows 95/98, NetBIOS) domain name: