Thanks Jeff, that was exactly what I needed to do. Problem solved!
I have another question if you don't mind. Is there a way to have a characters feet with 'Fixed' points, as well as 'Mousetrack' points? I would like the character to appear anchored down and stable up until the point I would like to move his legs to step on and off the screen.
If you set the Mouse Tracker's After Move parameter to Hold in Place, would that work? You might need to move those handle slightly initially to fix them in place first.