Ars Technica

Adding Active Directory Users and Computers to a secondary DC.

You need to run dcpromo and tell it to make a secondary domain controller in an existing domain. Once it's all done it will reboot the machine and then you can use your domain login.
Ars Technica

Any way to add second domain to active directory users and computers?

So lets say I have three domains and they have trust relations set up. If I want to administer them from a workstation, I can install the management tools and then use the active directory users and ...
Network World

Working on Active Directory from an XP workstation; Personal computers on company network pose security risk

* Working on Active Directory from an XP workstation By Steve Blass Q: In our Active Directory domain, we’d like to manage users and groups from a workstation rather than from the server. How can I ...