Hi,
THE most important thing is to use the firewire connector.
USB is only useful for webcam or stills.
If you don't have a 1394 connector on your PC you can get the one I'm using from dabs.com for around £12. This even includes a 6pin to 4pin firewire cable.
ie Manufacturer : DABSVAL
Product : Lucent Firewire 2/3 Port PCI
Quicklinx : 179GZD
Hope this helps
Sorry Mark, you just beat me to it.