Actually, Messiah's link to pacific cable leads you to this cable which looks like the right one:
http://www.pacificcable.com/Picture_...aName=DVIRCA-2
When I ordered my component to DVI cable, I believe it was listed as "DVI to component" so I was worried if it was directional. I gambled at the risk of having to use the return policy and it was successful.
The cable introduced a green line down the left side of the screen. At first I thought it was a cable flaw, then I remembered that the projector could shift the viewable area of the video signal. I slid the whole image over a pixel or two and all is good. The cable introduced a slight video frequency shift.
Pacific Cables also seem to have a splitter cable that might do what I need:
http://www.pacificcable.com/Picture_...ataName=DVIY-2
The question again is "Is the splitter designed to go only one direction?" It'll do me no good if it can only do 1 input to 2 outputs. I need 2 (or more) inputs to 1 output.