In Photoshop 7, I can't get the pressure sensitivity or eraser on my Intuos 3 to function. It works in the painter demo that came with the tablet, and I swear that I've used it in photoshop 7 before, but the damn thing just won't cooperate now. Any ideas? I've already tried reseting the driver like 5 times, though it doesn't seem to be the problem (seeing as it works in Painter Essentials)