I used the VS 2005 BETA 1 cleanup tool, and I have to say it defintely made the transition smoother and easier. Now I don't know if it's responsible for whacking my source control plugin, but everything else worked fine. I'm going to try reinstalling the VSS client when I get home and see if that fixes it. (see earlier post for more info)
Still considering making the switch to SourceGear Vault. we'll see. I do like their bug tracking piece (Dragnet) too.