cronicles of riddick wont work open gl prob i used riva tuner but nothing happens screen goes black and frezze at licence screen. i have geforce 6600agp. plz help

I think it's probably the bad OpenGl renderer that came with the PC version. Go here (http://www.gameburnworld.com/gp/gamefixes/thechroniclesofriddickescapefrombutcherbay.shtml) and download the NVIDIA OpenGL fix file from there. Decompress it using WinRar or some other program and extract the file to the C:\Program Files\Starbreeze Studios\Riddick EFBB\System\Win32_x86_SSE2 folder, replacing C with another drive in which you have installed the game if you haven't installed it in C. Now run the game and it should run perfectly. And I think you need more RAM, 256MB is too low for the game to run properly.