I installed the Microsoft driver to see if it could do anything interesting that would be useful to me. I wish I hadn't. I removed it when I realised I didn't need it, but unfortunately, as pointed out, every reboot resets the thing back to "middle button equals change application". I could stop this behaviour by using the MS Mouse module in System Preferences to "disable" it for "Global Preferences" -- only problem ? I HAVE to keep running the MS mouse driver. If I delete it from the system or stop it running; every reboot will reset the middle mouse button behaviour to "middle button changes application". ARRGGH !! Will I have to reinstall Panther to reset my mouse behaviour to normal ? Or is this mouse behaviour stored in a .plist file somewhere. If someone knows where .. please share ! I hate extraneous process running that I don't need, and I -definately- don't need this Intellipoint driver anymore !