I have a Canon MVX250i which i think is sort of the euro version of your camera (or something like that)
I wanted to see what it was like as a webcam - it was pretty cool - just plugged it in via firewire, started up MSN, selected video chat, and MSN automagically brought up the video feed from the camera, no probs.
Same as iMovie automatically finds the Firewire feed from any connected camera really.
By the way does anyone know what iMovie etc would do if TWO cameras were connected via firewire?
The only negative was the amount of cabling and equipment on my desk was a bit much - mini tripod, camera, camera power cable, firewire cable.
Since I wasn't recording, the camera kept turning itself off too - had to dig into the manual to figure how to stop that. An easier way would be simply to record over a spare tape, and keep reusing that tape.
hope this helps
tomato - who still can't get used to people on videochat not quite looking me in the eye.