I'm not a big fan of having Visual Studio 2008 automatically trying to connect to my TFS server. Sometimes you just want to open VS and bang out some code!

I've found the registry hack for TFS 2008 is a bit different than 2005.  It's simple enough, though.

1. In the registry editor, navigate to HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\TeamFoundation\Servers\<TFS SERVER NAME HERE>
2. Open the AutoReconnect DWORD
3. Change the value to 0 (zero) decimal

Let me know if you've found a different or better way to do this!