Assuming I can hammer out some issues with the inputs on my new TV, I'm finally going HD (partly, anyway). My setup for several years has looked like this--a single 322 receiver (DP34 switch) with one output feeding straight into the living room TV and the secondary output feeding through the wall via coax to the TV in the bedroom. The latter isn't changing, but the living room TV will be the HD one. What am I looking at for an HD receiver? Can I replicate the current setup with a single receiver, or should I just ask to keep the 322 for the bedroom TV? Do I need a new switch or connections to the dish itself? Can (or should) I try doing any of this myself, or should I just call for service?