I mentioned something like this before. I just picked up the samsung 50" plasma 550. I've noticed that it displays resolution of the incoming signal. I have the Onkyo 606, it is supposed to be able to upconvert any incoming signal to 1080i. So, if I have known 480p signal coming into Onkyo, should the outgoing signal be displayed on the tv as 1080i?

Hope to gain a wealth of knowledge and maybe use it.