It seems that Microsoft has quietly released the final version of the Visual Studio 2005 SP1 Update for Windows Vista pack. It supposedly adds full compatibility for Visual Studio 2005 running under Windows Vista, althouh you still need to run it as admin. It was available in beta form since the SP1 for VS 2005 was released and Microsoft had announced before that the release version would be made available in Q1 '07, so here we go.
Note that if you have installed the beta version of this update you will need to uninstall it before applying the release version, as usual.