Sound but no picture, though my computer supports OpenGL 2.1

[Ozcrash]

Hi, my problem is that I don't have vision while playing NiGHTS Journey of Dreams, I have audio but no vision. I tested other games such as Sonic Riders Zero Gravity, and it works pretty well.

I searched on this forum and found an topic about this. It says my graphic card needs OpenGL 2.1 support. I checked NVidia official site and my card support OpenGL 2.1 according to this page http://www.nvidia.com/object/product_geforce_gtx_260_us.html

Please help me to get the vision to be able to play the game.

Note: Surpisingly some of text is seen, but like normal text not effected text. I can see "New File" "Select a story" etc.
Another Note: I have seen this game can actually be played by someone on YouTube, the error belongs to only my computer.

My computer features:
NVidia GeForce GTX 260
Intel Core 2 Duo CPU E7200 @ 2.53 Ghz
3,50 GB RAM