The channel scan is for cable-ready TV's w/o the use of a tuner. You plug the coax from the wall into the TV, scan, and go. However, I don't know if it works with Dish setups. With Dish, ideally, you should be going from your dual LNB head to a pair of seperate tuners. Plug the tuner's a/v out into whatever display device you want, and it's good to go. Saves alittle money if you already have the tuners laying around, and just a pc capture card (instead of an actual tuner card).
Ahh, just actually read eagl's post, yeah there's an option for that in media center too
