I'm having a problem with the HVX-200 1394 connection, it disconects as soon as its turned on Vista 64 on a Mac Pro. I also tried the usb port downloaded the drivers and when it asked to connect the usb device and continue it would not go any furthor in the install.
What's Vista 64? Do you mean you're trying to connect to the camera with Windows via Parallels or some other virtualization? Why? I'd stick with connecting to it in Mac mode and avoid all the driver hassles or at least switch to Boot Camp. Connecting via USB is quite different from connecting via Firewire.