Yesterday we went into a client office to setup a exchange 2003 server. The client already had a windows 2000 dc that was running all of apps it was also running exchange 2003. So we unistalled 2003 from the dc. After that was done we setup the new dell server that was just bought. The client also wanted the new server set up as a domain contoller to provide some fault tolerance. So I ran ad forest prep and domain prep on the 2000 server box than I set up the new 2003 server. After that I tried to install exchange 2003 on the new server but forest prep would not run. My account had scheme,enterprise and domain admin rights. I tried the install it from the command line serveral time. Has anyone here came across a problem like this before? After a million trys it installed but at the end of installtion it said forest prep has not been performed.