http://code.google.com/p/iwidarwin/
Try those I don't know how they work or how to are to be installed.
( I'm a hardcore linux man but have just started with macosx )

maybe Gurruwiwi can tell you more

On the mousepad of the 6935 is it in any way possible to get the tapping on the mousepad working ? I use this alot and now I need to use the buttons, gets confusing sometimes