Reflex XTR will be available with a 9c square connector. It comes with a USB connector which is the copy protection so it is not available fpr seperate sales. The minimum is a P4 1200 with a 32 MB video card. Minimum in our spelling means all options on but lowest resolution and a minimum display rate of 30 FPS. The optimum is comming from the motherboard and the video card. A fast front side bus and AGP4x or 8x already improves a lot. A 128 MB video card like a Radeon 9700 pro or a Geforce 5900 ultra is the best you can get. That's driving the FPS at max resolution to abt. 250 FPS. Cheers - wolfgang