Map RMB to space explorer button 2

Any help to map the right-mouse-button function to one of thebuttons of a 3d connexion space explorer mouse is appreciated.
Unfortunately the RMB is not listed in the options under buttonconfiguration tab in the 3d connexion control panel.

Since I am using a pen-tablet in my right hand it would be veryhelpful in SW 2008 to have one button for the S-bars and one forthe RMB function directly on the space explorer in my left hand!

Any idea???SolidworksGeneral