RCA DRD480RE Receiver "directv remote rc64r" Questions

DirecTV RC64R RF Remote control I'm trying to control my DRD480RE with a new DirecTV RC64R RF Remote control and can't get the RF to work. Actually, you can go into the system settings by choosing ...

...DirecTV ay they are not compatable Did you ever figure out how to do this? I have a Denon avr-1803, and also cannot control the volume from my Direct TV remote using the codes listed on the Direct TV ...