I have just upgraded to HD and received a HD receiver but had to get on the waiting list for the the HD DVR. Can both my old and new HD receiver be hooked up to the TV at the same time? I hate to be without a DVR until they get the new ones in. Also I have a backlog of shows on my DVR currently. Once I get my new HD DVR is there anyway to transfer the programs to the new one or can they be viewed off the old without being connected to and charged by Directv. Thanks!