RE: Longer term answer for Rust in fridge burner
Cover the burner up and remove the roof vent to access the flue tube and use a wire brush with a long wire handle. (These are available at HVAC supply houses).
Push and pull the brush up and down a few hundred times to remove the rust. ;)
RE: Satellite Dish question
Remember that you will be able to receive high-def reception for Direct TV ONLY with the $2200.00 Traveler dish. The domes will NOT receive HD for Direct TV.