I don't know if this is true for all notebooks using an Alps touchpad, but my N6210 has a Gestures tab in the Mouse Properties where you can turn on a "Use Back/Forward Buttons" gesture via a checkbox. This turns on a feature so you can run your finger along the top of the touchpad for forward and back. It works in IE (useless) but not in Firefox. At least, not that I'm aware of. Does anybody know how to get it to work in Firefox?