I'm a newbie to DirecTV and had it recently installed (3 weeks ago). The forums here are great. I had a D12-100 receiver installed in the bedroom since we have an older CRT TV in there. Can I use a DirecTV HD receiver with the CRT TV? When I ordered DirecTV the CSR never mentioned whether this was possible and I assumed it was not possible. I've read on the forums about the potential for MRV capabilities coming up (We have an HR23-700 in the living room) as well as thinking about what happens in the future when the CRT TV dies. If I contact a DirecTV CSR do you think they would allow me to swap the D12 SD receiver for an HD receiver without charging me for a new receiver?