Try my program and see if it can work for you.
http://www.sevenforums.com/projects/...y-project.html
It has a feature in it to make a window transparent when it's active via a hotkey, if that would help you. I also believe, in time, that I could make a script that makes the active window transparent automatically, but I never saw a use for it, as it seems awkward to make every window transparent...
Oh yea, and welcome.