I am thinking about getting a TV tuner but do not know how they work with satellite receivers... Is there a limit to the number of channels it will pick up?? Can you use the guide on the satellite like you normally would? And how do media centre pc's hook up to your tv? I was thinking about getting windows media centre and doing that but I think just hooking up a coaxial cable from the satellite receiver to the tv tuner would work just fine for me.