Reading the OPs post again Im just a bit
He says he can
capture video using any software package but cannot
copy the video to PC
On the face of it this sounds ambiguous but is quite possibly not intentionally so
For HDV and DV . I would assume that
transferring the video data from camcorder tape to PC ( usually reffered to as
capture of streaming data in real time) is loosely synonymous with copying but is not reffered to as such
In camcorder terms we would think of
copy more in relation to an HDD camcorder whose mpeg2 files on camcorder HDD can be moved to PC HDD by drag and drop or Windows copy paste commands. Although HDV is mpeg2 these are much larger data streams ( like DV AVI for SD) which require large amounts of data moved at a sustained high rate which USB is not as good at as Firewire
In both cases the recorded video data on tape or HDD repectively goes from camcorder to PC but by ( strictly speaking) different transfer methods
As such
Copy in this case would bring USB to mind while
capture would refer to firewire.
All the advice in the proceeding posts are on the premise that you wish to somehow "transfer" the recorded video files on the tape in the camcorder to your PC via firewire for editing.