Okay, so I asked my brother if I could quicktly install Doom 3 on his new Intel iMac so I could see how it runs, and he said sure, and it's very weird. This is what happends. Okay, for starters, I opened it up, while holding down the command key, so that I could set the resolution to 1650x1050. Then inside the system window in the game, I set the resolution to 1600x1200. Then I quit the game and opened it back up, and it set it back to 640x480. The resolutions at that startup window (holding down command) and the resolution that I set inside the game have to match, but they can't match because there are no widescreen resolutions inside the game. What the hell is going on here? All I could do is set it to 1024x768, because that resolution was both at the startup window and inside the game. I want it to fill up the screen at the highest resolution possible. What is going on? By the way, just to clear things up, if I DO NOT open that window at start up (by holding down command) it sets the game to 640x480 no matter what. I have to open that window up if I want a different resolution, but there isn't a high resolution in there that matches the ones inside the game. Thanks for any help you may give me.