I don't know any software off hand. Most games get full priority when loaded up and they often get very unhappy if anything tries to display in the same real estate. I recall the gadgets side bar in Vista trying to show through the games and causing all sorts of chaos. The games are just simply not designed to share unless it is Tetris or something. You would be far better off getting a cheap second monitor. A little bit of tweaking should allow you to achieve what you want then.