I am still trying to find a webcam or digicam (that can function as a webcam) which has firewire connectivity. It seems the only one that has this feature is Apple's i-Sight. (Is this a deliberate marketing ploy by Apple?) I've now wasted money on two different webcams but the picture quality has always been poor, and I'm sceptical about wasting more money on an iSight unless it's at least as good as the one built into my iMac (and preferably better). Alternatively, is there any video capturing software out there (preferably one which accepts multiple simultaneous input sources) which supports USB connectivity? This whole issue is really getting me down.