So this weekend I figured i would setup my scanner, a Canoscan 8400F. In my infinite wisdom I first downloaded and installed the drivers for the 8800F. When I installed the 8400F drivers they seemed to partially work. I can scan the full platen, but I can't get the option for scanning film negatives. I'm thinking this might be due to the 8800F drivers being installed as well? If so how do I go about uninstalling those drivers? There is an uninstall utility for the 8400F drivers, but nothing for the 8800F.