I have a Canon Optura 20 and I wanted to know if it was possible to turn it into a webcam for use on a mac and pc? If so how do I do that? Is there some special software needed? Is there freeware out there that can do the trick? Also, would I need a firewire connection or just a usb 2.0 connection? I need to know this ASAP so any and all help is greatly appreciated.