Directx 8.1 is in beta right now. Besides, I wouldn't think that your directx version would have any bearing on OpenGL performance. Unless you want your directx to expire, I would recommend sticking with 8.0a for now. I have 8.1 installed on my computer right now, and it doesn't appear to be that much different. If someone wants a link to get 8.1, I can provide it. I don't know if this forum will alow me to pos it though. Can I?