I finally got the TiVo Bolt. I have it hooked up to one TV just to see if we liked it and we do. Now I need to get it hooked up to the rest of the house. The person who built the house ran single coax and double coax to almost every room it the house. They all come together in the room over the garage, but none of them are marked. Anyone have any suggestions for an easy way to figure out which wire goes to the rooms where I want to hook up TVs?