I am thinking about giving up on my CRT projector project and getting a HP XB31 projector instead. I've already installed my ceiling mount and a very long cable (about 75') to my source area. At the source the cable is connected to a DVDO iScan Pro line doubler (but it could be connected in to a QuadScan instead) and at the projector mount it terminates in 5 BNC connectors. I've looked over all the HP docs and I can't figure out the best way to connect the projector to the BNCs. I don't plan on using a HTPC - instead I'll run all my sources (LaserDisc, DVD, and ReplayTV) through the line doubler, then send that signal through the long cable to the projector. Any suggestions?