Questions about Google TV and my 722k receiver: 1. will the $179 box work well with my sling adapter already in use that is in a usb port in my 722k? 2. I'm an Amazon Prime member. Would I be able to access my Amazon account using this Dish/Google setup to watch streaming Amazon programming? 3. Are some TV's incapable of working with Internet viewing? I have an older Sony Wega, but I'm guessing it would be capable.