I will try to explain what I am looking for.

About a week ago I decided to swap to Linux. I am now running Mandrake 10.0 Comunity. Everything is ok. I`m reading documentation and learning command-line stuff. In two evenings I got my GeForce 4 drivers installed So here is what I want to know... is there equivalent display manager for GeForce like in Windows. Can I manage my screen`s brightnes contrast and color gamma in graphic(it`s called X?) screen just like in Windows? I`ve read about how to set anti-aliaisng adn filtering stuff in terminal... thats ok I think I wiil get on with it but haven`t find enything about screens look.

Hope you`ll understand my bad english

For mdk10 that's pretty easy to do in the kde control center, assuming your using kde and not gnome or some other DE. From the start menu, go to System>Configuration>Configure Your Desktop which will bring up the kde control center. Form there, go to Peripherals>Display>Monitor Gamma.