I have an HP Pavilion xt878 with Windows XP on it. My video card is an NVidia Riva TNT2. I used to have windows ME, but after many glitches and crashes, we had to clean out the system and upgrade to XP. A computer technician came in and did that and reinstalled pretty much all the drivers. Everything seemed to be working properly, except that the computer can no longer run graphics in Open GL format, and I researched and found that this card should be able to do that. I pretty much knew this anyway because it used to be able to run the games in ME before it self-destructed. Any advice on what i can do? I tried updating it but i dont have anything to update it with.