Our last comments may have crossed, but as I mentioned in my last one,
yes, as best I can tell from my slaves (XP+VS-Express, XP+VS-Standard,
Win7+VS-Standard), the Visual Studio key is present in a brand new
install.  Note that it is not present in a brand new XP or Windows7
install, but only after Visual Studio (Express or Standard) is
installed.  So it comes along with Visual Studio regardless of platform,
although the key does change according to VS version.

I think that should be fine, since the test is only running in a Visual
Studio environment to start with, so having a VS-based key should be
just as good as a Windows-based key.