I just reinstalled my OS and now the scroll button on the mouse doesn't work. (Unfortunately I've trained myself to lean on this little feature quite a bit). The special shortcut buttons on the keyboard do not function any longer as well, although I rarely used them and can live without. Is there a way I can let my PC know that the mouse has a scroll button. (By the way, the 'button' feature that brings up the four direction arrow still works, but the actual rolling scroller does not). Any help would be greatly appreciated. Thanks!