I had no longer gotten my new copy of Windows7 Ultimate 32 up and running when I learned that you can install Windows XP as an operating system within an operating system via the virtual machine. This is done by downloading two small and one very large file from Microsoft. I am getting ready to make clones of one of my CFS2 installs, along with clones of my aircraft sounds and scenery files so I can compare running CFS2 on Windows7 versus the "Virtual" Windows XP. Did any of you know about this? Has anybody already tried it? What are your reactions? Am I going to be the Guinea Pig here?