On an Apple(r) machine, the F12 key is mapped to the right button. If you want quick access to the buttons, and are running gnome, right-click the toolbar. Add a dwell click applet and use it to middle or right-click wherever you wish.
This is super easy, and I hope it works for you. Otherwise, install fluxbox, and configure the X and fluxbox files there.
A little modding and programming is what makes the computer fun.