The battery app (it's separate from the wireless switcher, no matter what the Dell site claims) would just crash itself whenever I launched it in Vista. You might get that behavior using the Compal driver to update the battery interface. I installed it once (previous Vista install) to see what it did, and I didn't really care about it. It was just another battery applet that would define the load. I might install it on another Mini 9 and pull the driver with drivermax to see if it helps on my unit.