I just got an IBM 800 DPI Scrollpoint Pro Optiical mouse. It does not have a scroll wheel. Instead, it has a scroll level where the wheel would normally be. It is trickly to put light enought pressure on the scroll lever so that the pages does not scroll too quickly. Are there any software adjustements I can make to slow down the scroll speed? I have already set the wheel scroll line speed to 1 line per turn.