Video to PC for cartoons

Am looking for webcam to record children’s bio’s: figure to look for ccd, would like streaming usb 2.0 dv quality or close to if possible OR OHCI firewire if I can control more than one cam… needs to be within a few hundred, max, and since I am running the video thru a cartooning filter the dv quality doesnt have to be very good but I hear that regular webcams really suck and I want a good resolution… comments or suggestions for making it easy to record and transfer (live or close to)?