I recently built a new machine on the Asus P5Q Pro motherboard. I am running Vista 64 and the system works well except for the onboard firewire. It recognizes by video camera, but the picture and sound recieved into movie maker is noisy. I bought a PCI firewire card, using this firewire port, the picture and video were crystal clear. I then returne the P5Q Pro to Asus unde rwarrenty. Yesterday I recieved a new one, rebuilt the system, and I have the same problem with the onboard firewire.
OK, I might have rushed a bit with offering any help here - my sisters DSLR has USB and HDMI connectivity, no firewire Sorry, I generally dont play with cameras/camcorders so I wouldnt know, but i will try to borrow a camcorder(most likely over the weekend) with firewire just to check it.