I have trouble installing RayDAT:
Installation using the CD:
Rebooting after instalation ends up with a bluescreen pointing at hdsp_64.sys as the file being at fault. The only solution is reverting to the point in time before instalation.
Installation using the downloaded drivers from the site:
No surprises on reboot. Card is still invisible.

PC: Intel Core i5-3570, Q77 Chipset motherboard, 16GiB RAM, Windows 7 x64 Professional