It appears that Subversion is no longer where it’s at.  We now have Mercurial.

Joel has a nice tutorial f or Mercurial.

There is TortoiseHG for Explorer Integration which is what I installed which included Mercurial.

Two plugins for Visual Studio exists as well: VisualHG, hgscc

Update:  I was unable to get hgscc to work on Windows 7 VS 2008.  Any attempts to add a file from  within VS resulted in a generic error  message.  I uninstalled hgscc by right clicking the .msi install file and selecting uninstall