non X-box Controller keybind questions
 

I have a Saitek P2900 Wireless that I bought for use with other computer games. The joysticks work fine and I've been able to set them up fine as well, though for some reason they seem upsidedown/backwords, but I can live with that. The buttons also seem to work; but I can't seem to assign keybinds the way I want to.

For example, if I wanted my "button 4" to be "crouch" I am unable to set that as an option (or perhaps am doing it wrong)

Anyone can help?