What is vertical synch? I turned it on just to see what it would do, but so far have noticed no difference from when it was off. I am REALLY new at all this, so please, everyone, be patient with my novice questions. And while I'm asking, my ATI Radeon 9700 has a slider for TrueForm (?). What the heck is that? These cards should come with instructions for us "computer-challenged" folk!