I was able to use my 722 remote (21.0) to control a Joey by enabling IR on the Hopper and changing the remote from UHF to IR (I also changed the key from 2 to 1 but don't know whether that was necessary or not).
Yes I'm currently pointed at 61.5/110/119 with two 500s (in Miami,Florida). Is it possible to repoint them to 61.5/72.7/77 or do I need a new dish? Back in VA Dish replaced the two 500s with one dish (a 1000?) when I added a receiver.