Based on your reply Gonk, I guess if I were to rearrange the component DVD video to go from the DVD player into the 990 then to the TV, I should get the "pop-ups" when using the dvd? The Sony supports 1080i/720p/480p/480i at the component video inputs.

I guess I have to plead totally ignorant over your last paragraph concerning the VCR switching. (I think it also pertains to the dvd switching as well?) That being, "which means you never have to change the TV's input when changing sources (the 990 does it for you automatically). " I will have to get the necessary cables to allow the dvd & vcr to feed through the 990 and then just "play". I still don't see how I can leave the tv input to "whatever" and let the 990 do the switching.

Any thoughts on the Jenson Ground Loop Isolator, for my humming problem Thanks again.