I know that Nvidia cards have an option to maintain the aspect ratio of the game, so if you're say, running a game at a 4:3 ratio on a widescreen monitor, the monitor will place black bars on the vertical sides of the screen and the picture is enlarged but not stretched.

Do ATI cards have this option?

LOL, anyone want to try running H2V at the 2.35 ratio (theater widescreen)?