I have iBook G4 1GHz 12" with OS X 10.5.8 and I'm trying to enable two-finger scroll by using iScroll2. I have used this previously with an iBook which by default has the scrolling disabled, however, is there true hardware limitation on this model? It does recognize two fingers because the second mouse button clicking works (when I place two fingers on the touchpad and click the button) so I'm thinking this should support scrolling as well?