can any one help me? waaaay too dark

i have a geforce2 mx 32MB card. i play unreal tournament, but just today tried with opengl. it runs very smooth, but it is just way too dark… very dark. i set the ingame brightness all the way up, and i did the same with my monitor, and in the display<settings<advanced thing. someone please help

turn up your GAMMA !

what if the gamma is all the way up?