2 finger scroll and 2 buttons
“One Finger Snap is a Preference Pane that brings up the contextual menu whenever you click and hold down the mouse button. This means that you can do everything with a single-button mouse that you can do with a 2-button mouse.”
finally a software that solves the one-button-trackpad-problem for newer power-/ibooks as well. while for older apple laptops, sidetrack offered a reasonable solution to having multiple mouse buttons, it does not support the two finger scroll on newer models. now, one finger snap does.
oh and by the way, with iScroll you can get the 2 finger scroll for older models. 
