If I recall correctly, F1-F5 act as some of the buttons on the controller (traingle, square, start, select, and L1 I think). And escape is circle, I seem to remember going back to the previous menu when using BlueMaemo was a pain due to the lack of this button. It's stuff like this you need to look out for, mobiledivide. Oh, and the middle mouse button acted kinda like the PS button.