I always have troubles with selecting things with a mouse and having them move. My solution is to use a trackball. For delecate selections, you can use one hand to move the ball and the other to click; there's no danger of the mouse moving while you're clicking. (Of course, some folks just HATE the trackball, so maybe you could put a second mouse or a touchpad or something on your system to to isolate the click from the movement.) - Dex