I would run 2 RG6 from a dual RG6 wall plate from each room to a point terminating outside, on or near south side of house or to a utility room in basement.
If I had it to do over again on our house I would do the following...
Pick a room in basement for a utility closet/room, under stairs room.
I would run 2 RG6 from each room dual RG6 wall plates, some rooms would get 4, 2 on each wall a TV might be placed to the utility room.
I would run 5 RG6 from the south side of house, where a dish might be located to the utility room and 2 from where the cable TV might come in to the utlity room.
I would run CAT5 or 6 from each room, dual phone/cat 5 jacks, some rooms even 2 or 3, and terminate in that utility room.
I would run 3 CAT 5's from where the phone hookup would be to that utility room.
That way you can have your Dish switches, Computer router and DSL modem all in the utility rooom..
I wish I had put in a suspended ceiling in the basement instead of sheetrock.
I would run a 3 in PVC conduit from the attic to the basement utility room for OTA antenna and future use.