This is pretty awesome. If you don’t have the Xbox remote control, you can use a DirecTV Universal Remote to navigate through the Dashboard and to play DVDs and whatnot in 4 easy steps.
1) Switch the DirecTV remote to AV-1. Point the remote away from your receiver. Press and hold the select and mute buttons until the light above the AV-1 switch blinks twice.
2) Press 991, then press 2. Now press Power.
3) Press Ch. Up 35-40 times, pausing between each press. The light above AV-1 should go on every time you press it.
4) When your Xbox 360 turns on, immediately press Select.