As long as the RF cable is RG6, and I would recommend it being quad 4 (4 shields) you will be fine. Usually RG 59 is fine , but if you can get or already have the RG6 there, then use it. I know Direct for instance does free installs that include the dish, just pay real close attention to the installs. They work by the job, so they will blow right through it, and some of the ones I have met I not the most knowelegible (sp).

You don't need an account to activate the box with Direct, nor I believe Dish. Less sure about Dish though.

If this is a new install run extra cables, we run at least 7, plus ground from dish location to distro.