I have a micro innavations optical wheel mouse. it has the two (left and right) standard mouse buttons with the mouse wheel in the middle. It seems that alot of these mice have drivers that come with the product, but leads to the devices wheel not working in OFP. I used the standard (generic) MS drives included on the OS disk and things are working fine, in and out of OFP. I was also able to remap the controls to include clicking down on the wheel to bring up the action menu in game play. good luck. Kombat