Look at http://www.compuware.com/products/devpartner/default.htm ("http://www.compuware.com/products/devpartner/default.htm")... in the bottom left it says "As of April 3rd, 2006 the DriverStudio product family has retired. For customer support information please contact our FrontLine website."
Very sad
I guess Vista was too much effort to update to. Guess we'll all have to make do with WinDBG!
Will