I am thinking of purchasing a Dell 2005FPW 20.1" widescreen LCD monitor to use with a Dual 2.0 G5. However, the monitor also has S-video in and I would like to also use it as an LCD TV. If I connected either a cable box or DirecTV receiver to the monitor using the S-video port, will I be able to watch TV? What quality picture could I expect from this scenario? Since the monitor is widescreen, will the picture be stretched out and short, or will there be black bars on either side of the picture? Would I have the option of selecting the resolution, or would the monitor/cable box do that automatically? Or, is this just a bad idea?