Hi. I found the instructions in the Radio Shack manual to cycle through the codes until the correct one is found, and I found it. Unfortunately not only does the Radio Shack remote control the DCT700 box, it also controls the DVR box at the same time. That is, channel up changes the channel on the tv and the picture and picture, so, the Radio Shack remote is working the same as the DCT700 remote which isn't how I had I hoped. I hoped that the DVR remote would control the DVR box and picture and the other of the 2 remotes would control the DCT700 box and the picture in picture.

Thanks,
Jack Moreau