The old driver works fine under win2k MD..Sign : after running the Msi/setup.exe, there is 3 files add to ur windows 1) RBC9-SpaceNav.exe in "program files\RBC9 ..." 2) RBC9-SpaceNav.sys in your system32\drivers and 3) RBC9-SpaceNav.inf in "windows\inf" now , if u follow screen i...