James, maybe you know, maybe not. You have to physically repoint your dish/LNB (or set up another one) to try and receive different satellites. You can't just scan a different one from the list and get differnt channels.
If you're unhooking one receiver and plugging the new receiver into the same wire as the older one--or running another wire from a 2nd output on an LNB, just copy the antenna settings from the one that was working properly.
