Can’t create child domain/tree in Windows Server 2003 Enterprise Edition

Hello!

I just recently got Windows Server 2003 EE, and have already setup Active Directory and DNS.

I have tried everything, and it seems to be going great. Client computers (Windows XP Professional and Windows Vista Ultimate) can connect to the domain and login without a problem.

The only thing is, when I try and create a domain child or another tree, it won’t let me (on my DC (WS 2003 EE)). When I click RUN > DCPROMO, I only have the option to uninstall Active Directory. Obviously that’s not what I want. Does anyone know how I can fix this?

Thanks!