I hope you can get back to the basics with me. I really don't know much in the electronic world and my husband is worse than me. I just went to Radio Shack and the salesgirl told me that they didn't have anything (splitter is what I was asking about) that would work to allow me to hook up a third tv tv to my DVR. She said with the newer DVRs, I would have to call Dish to come and install the 3rd tv. I am wanting to hook up a third tv to our dish network vip722. TV1 is in the LR in HD, TV2 is in the BR in SD. I would like to hook up another SD tv in the basement. If the salesgirl is wrong, where would I put the splitter? The installation guy that was here to install the DVR, left behind a Dish Pro Adapter that plugs into the wall. It must have been there from before behind the BR tv. Can I use this for anything? Thanks