Got VS2008 Team System up and running... Only issues I ran into were needing to update the .NET Compact Framework 2.0 to SP1 and reinstalling the .NET Framework 3.0 Redist (I had this installed but something got hosed so I had to reinstall it). I ran the beta versions on a VM so I didn't have to deal with issues resulting from uninstalling betas on my dev box. I'm really liking the VM approach for evaluation! 

Rick Strahl has some interesting comments on the VS2008 install here.