Did you find a way to get a second mouse button? I saw several howtos that said that a keyboard key could be mapped to it but none worked for me last time I tried (four years ago?)
I used to use Ubuntu on a Macbook, and it was pretty easy to map two-finger-tap to right-click and three-finger-tap to middle-click. I guess if you're the kind of person that hates tap-to-click and prefers hardware buttons, that's not so useful, but I had no problems using it.
