I'm trying to view video streams from a video capture card. It's a Pinnacle Studio 500-USB, which has S-video and composite inputs, and firewire and USB outputs. I've connected the S-video to my cable TV set top box, and firewire to a MacBook Pro, however I can't figure out how to view the video stream. I just need to view it, I don't need to copy or edit the streams. How can this be done?