How to...
 

How to configure a 5button mouse to work with MOHAA?

Download the newest drivers. You should be able to set it up through the controls menu in game. If you have a microsoft intellimouse the intellipoint software needs to be running. There have been a lot of other posts about this if you need more info.

http://tfo.servebeer.com/file-guides-5mouse.html

This is from Dogmeats site. A very good doc on how to get a 5 button mouse to work in MOH.