I am having a problem promoting a server to domain controller that is running Server 2003, the only current domain controller is also running Server 2003. Originally the domain was run on Server 2000, but I added another DC that was 03 using adprep. I then reformatted the 2000 server and upgraded it to 03, and this is the server I am trying to add back as a domain controller. The problem is I keep getting an area telling me that I need to run adprep, but when I run it on the active DC, it tells me this has already been run and updated and it is aborted. Does anyone have any ideas on why I can't add a Server 2003 machine to a domain that currently only has a Server 2003 DC?