This mouse worked fine on ME. When I went to XP the setup contained a link to Microsoft which gave instructions to go in 'run', 'msconfig.exe' to change a setting for it to work with XP, which worked. However, after a system recover (don't ask!) it gave a link to a driver download, and the 'msconfig.exe. option wasn't there.
After downloading the driver everything was OK except the small thumb button doesn't have the option for F2, only F1 and F5. I use F2 a lot, is there any hope of getting it back?