Networks

To move up from an NT 4.0 domain, you cannot simply join and promote; you need to do a migration from the NT domain to Active Directory.

You'll set up a W2K3 Server (or W2K) and create a brand new Active Directory, create trusts between the NT Domain and the new AD, then use the Active Directory Migration Tool (ADMT) to copy user accounts and computer accounts from the NT Domain. Migrate the remainder of your network resources, test, test, test, then you can retire your NT4 gear.

Here's an article. The article is based on W2K3, but should be very similar if you're going to W2K.

http://www.microsoft.com/downloads/details.aspx?familyid=E92CF6A0-76F0-4E25-8DE0-19544062A6E6&displaylang=en