No need to wait until 2010 for mouse gestures. Just download StrokeIt freeware. Advantage: StrokeIt works in any program, not just SW. StrokeIt is application-aware, so you can customize the same stroke to do different things in different apps. StrokeIt basically sends hotkeys, so anything you can assign to a hotkey in SW can then have that hotkey assigned in StrokeIt.
-handleman, CSWP (The new, easy test)