I just ordered an SP5000 to replace my old CRT FP and noticed you "need" to run the computer at 1280 x 1024 instead of 720p. Why is that? Can't I just set the computer to 720p and run the signal to the projector with component cable? I've read that some projectors wouldn't support HD through component because of copy protection, is this true? Will I be able to get 720p out of my computer to SP5000?