I've wall mounted my plasma TV and now I don't want to have a piece of
furniture specifically to hold the 3 components that need to be near the TV.

I was thinking about cutting/building a cubby in the wall, but that's a
pretty serious commitment.

Instead, I'd like to move the stuff into the room behind, and be able to use
my remote to control the cable box and such. Thus, I need to transmit the
IR through the wall. I don't really need the fancy ones that send the IR
over RF. I really just need a small receiver that i can stick on the wall
that has a short wire and a transmitter. Does anyone know where I could get
that? Or have any other idea?