I am trying to hookup the following 4 HDMI components. Samsung 52 HDTV, Time Warner cable/dvr box, Denon HD A/V, and Toshiba HD DVD. I currently onl have 3 HDMI cables. DVD to TV TV to AV Cable to AV I believe I need at least one more HDMI but think I might still need the optical cable for DVD to AV. Anyone confirm?