ryanthesav, go to Guru3d.com, and go to the Rivatuner Forum, here:http://forums.guru3d.com/forumdisplay.php?f=18
There you have all the help you need.
It's true about Ati Tool too, its a very friendly app, not as complete as Rivatuner, but very good. I can't use it because its driver is not signed, and Vista 64 doesn't accept it. Rivatuner works like a charm.