I have been having excessive amounts of problems with the MS Intellimouse software in Windows 2000. Version 3.1 works just fine in Win98 with the same hardware, but in Win2k it screws up. The icon doesn't appear, the buttons aren't assigned right (though it doesn't matter because changing the settigns has no effect) and it kinda messes up the double-clicking.
Intellimouse 4.0 screws up with a MS Installer error and forces a reboot.
I read on the MS KB that the 3.1 issues stem from a problem with msmouse.vxd, but I haven't figured out how to update it to the correct version, or ewven how to get the correct file. Any help appreciated :P