Thanks for all the responses. The name/password was correct (no spaces). I did enable one user prior to installation. It is a 2003 server machine, and I did log-in as admin to finish the installation.
The client had another machine (2003 server) as well and I ended up installing it on that machine and it worked fine. The original server was close to the minimum needed space requirements and I think that might have been causing the issue. That's the only thing I can think of that was different. Unless something corrupted during installation, but I re-installed once prior to trying the other machine. I think there was just too much running on the original server. Thanks again.