Just in case you don't all already know, you can download a program called multires, it locks the refresh rate to 85hz or whatever you have your desktop set at.
If you don't use this, even though your windows refresh is set to 85 or whatever, the game runs at 60hz. At least with opengl games. For instance, load quake3 and hit your monitors OSD and see what the refresh is at, probably says 60hz if you haven't hard set it. Just a tip to all that don't know, I know it helped me a lot with making games look much nicer......like they should be default.