Does anyone know what software I need to get Video-In up and running on this thing? It has a TV tuner card and inputs for RCA (red, white and yellow). I'd like to test something like play an old Nintendo off the CRT using the RCA inputs. Is this possible? What's the key combination (if any) in order to switch to video in? Can you capture video that's being input as well? I'm totally new to these TV-style Macs. I always lusted after them, but never used one!