Some of you that have DirectTV's HDTV receiver, how do you also receive network HDTV programming? What kind of setup do you have? Does the DirecTV receiver also receive network HDTV programming or do you have to have a separate receiver? If you have 2 different receivers, how do you switch context between them? Do you just purchase some mega receiver with 3 component inputs (for DVD, DirecTV, and network HDTV)?