Buggy Wacom tablet support

I am using a Wacom Intuos 3, win2000 and toon boom 2.5.
When I switch to using the tablet mouse all clicks in Toon Boom are interpreted as drawing strokes (i.e. if I try to select a menu Toon Boom actaully draws in a mark in the drawing area!)
I am using the latest Wacom drivers (The drivers that came with my tablet didn’t work with toon boom at all)