OK, is the above combination possible together or not? I get inklings from some places that it is, but All-In-One's tech support lady told me "They do not work together, the PVR 721 uses a different frequency. We do not sell anything at all that will go along with that satellite PVR"

I don't think that is accurate. A year or so ago I thought I did get the darn thing to at least turn it off and on after a learning session. I know right after I got the remote they downloaded a BUNCH of stuff over the phone. Now it does nothing.