We currently have a Windows 2K3 DC and a Windows 2K DC setup at work. We just bought another W2K3 server and when I try to promote it to a DC, I get an error saying that the Active Directory wizard cannot continue because the forest is not prepared for installing Windows server 2003. I ran the adprep tool when I put in the first W2K3 DC, and trying to do it again (now), says it has already been done, but I still can't promote this server. WTF??