Looking at upgrading my HV system. I have looked at many receivers and I am also looking at getting a projector. Maybe the Z1, HS10 or the Z90. Anyway some receivers have up conversion of the video signal to component. My Dish PVR is S video and I would like to just run 1 set of cables to the projector. What/how are others hooking these projectors up to their other components? I have found other external units that do this as well. Are these any good?