I thought this was asked before but I couldn't find it. I was wondering about any possible danger to hooking up multiple consoles on the same cord. I am referring to the S-video cables sold in stores that have all three current console hookups on them. I have both a PS2 and a Gamecube plugged into one cable. I assume its fine if only one system at a time, but what if both are on at the same time? What will happen?