I just bought a house with 1500sqft basement almost finished (sheetrocked, primered, soon to be painted) that will be the theater entertainment room. The builder already prewired for the speakers but did not do it for the projection tv in the ceiling. I would like him to prewire for the PJTV before the final paint but neither of us has a clue. Which cable (HDMI, DVI, SVideo, RCA jack, etc.) must I prewire into the ceilinng and wall for my Sony HS20 before the final paint?