Thanks you guys.
My config file already has "ZAxisMapping" "4 5". And tyg, I made the change to "lmPS/2 and there is no change. By the way, the 'lmPS/2' is 'l' as in LAMB', right? and not 'I' as in the letter 'i'?
As it is, my left button does the normal left click, the right button brings up a menu, the wheel, when pressed acts as a left click except that it opens a link in a NEW window instead of in the same window as a left click does, and turning the wheel does nothing.