Setting up Visual Studio 2005 and Team Explorer on my new Vista (I don’t think this is just a Vista issue, probably happens on XP as well) laptop, and when I went to go check out something from source control, I right click on a team project and get “No Commands Available” and everything is grayed out.

I figure out that the Source Control Plug-in wasn’t set correctly.

Goto. Tools->Options->Source Control->Plug-In Selection and change the drop down to Visual Studio Team Foundation Server

Works like a charm! :)