Also :

http://www.microsoft.com/windows.net...deployfaq.mspx


Q.
What is the upgrade path from Windows 2000 Server to Windows .NET Server?

A.
You can easily upgrade from the Windows 2000 Server family to Windows .NET Server. Lessons learned in planning and deploying Windows 2000 will be transferable to Windows .NET Server.


I'd suggest you give Microsoft tech support a call.
You get 2 or 3 free incidents with them.
If they can't help you, let me know and I'll contact Microsoft here and get it sorted.