Mac Gaming Mods

I just got a new Computer and the Graphic Card seems to handle the game input differently than the old one. Since i work in retouching i cannot tweak any systemwide preferences to adjust my settings. However, GR has become much darker and is nearly impossible to discern anything. The Gamma settings just make the entire screen brighter, but this looks like fog and does not help the gameplay. Aren't there any files that I could tweak to get better results?

Thx in advance

You can check in the option.xml file. This does have some options you can change that do not show up on the ingame options menu. You can adjust the fog on missions but if the game is dark for you on everything that is not going to help much.

Have you checked the other video settings ingame?