I am considering getting the HD Tivo DirecTV reciever and I am a little confused about hook ups. I have a new Sony 51 inch HDTV that has 1080i resolution and a single HDMI connector. Will the DirecTV HD receiver upconvert all to 1080i or just the HD channels? I will be using a Dtrovision HDMI Switch Model: HDS-41R to switch between HDMI connections from my DVD player and the new HD Tivo. I will be adding a scaler later and if the HDMI from the HD Tivo connections will not be upconverted,should I just run all of it through the scaler and connect to the component connections on the scaler and out with the DVI HDMI adapter cable to the switch? The scaler I am looking at is the Binwell ZLS-3000.