Utilities like this come standard on many windows laptops now - and this should come standard on every PowerBook. The feature that allows you to use the corners of the trackpad as different mouse clicks is a life saver. I've mapped a corner for right-click, and for each of the expose actions. On our 15" powerbook with a backlight screen, it's tough to map the expose functions into the F keys, because the backlight controls take up F8-10. This is a lifesaver - a much more eligant way of doing things. A wonderful addition to any Mac laptop.