My mouse is this:
http://www.microsoft.com/hardware/gaming/productdetails.aspx?pid=100
So the game thinks the SideWinder mouse is SideWinder Force Feedback 2 joystick?
EDIT: Btw. Microsoft product code for the SideWinder mouse is HKA-00003 (retail) and K7A-00006 (OEM). I have the OEM version, but
I'm quite sure the hardware itself is the same, it's just that the OEM version isn't boxed.