We recently hooked our computer to our Sony Bravia 40EX500 HD tv. We have the 722k Dish PVR reciever. The issue is when I change the TV from HDML to PC and back the dish remote won't work the dish reciever for a few minutes. Wait a little while and it works fine. Not a huge issue but it can be annoying. And I haven't the slightest idea why it would affect the dish remote when I'm using only the TV remote to change the tv from HDML4 (sat) to PC and back. And it doesn't matter if the dish is on or off. I suspect the IR is getting interfered with somehow. I haven't tried changing either remote to a different frequency. Maybe that would do it. Another issue with the computer is the screen res will change by itself. It didn't do that before we hooked it up to the TV. Thoughts?