1080p is only for certain ppv movies or VOD movies right now on dish.
If you are trying to get the receiver to push 1080i to your tv, you will need to go into the HD settings on your receiver and set it to 1080i, it may be set to 720 right now.
It is working now. I hooked the 722k up to a LCD tv and selected 1080i on the 722k. I then took the HDMI cable and hooked it back up the the MITS. It it working in 1080 now on the MITS.