I just bought the HD Tivo and it should arrive tomorrow . I would like to prepare in advance the wiring, so all I have to do is attach wires on Tivo end and turn on. I am not sure what I need to run wires. Here is my current set up. Phase III Dish with 3 of the 4 outs being used. I have a Std Def Direct TV Tivo upstairs and an Direct TV HD receiver downstairs. I plan on keeping the Tivo upstairs as well as the HD Receiver downstairs. I am going to use the HD receiver for PIP. So I know I need to run 2 wires to the HD Tivo downstairs. Can I split the signal coming into the HD receiver for the Tivo, or do I need to run the 4th out from the dish and split that for the HD Tivo? Or, do I need to buy a multiswitch and attach it? If so, which one and what wires get attached?