Charlie had a great idea I never thought of. The luma output from component video output will produce a nice b/w picture, very sharp, but as long as it's 480i.
I use S-video on all of my dvd players, satellite boxes, etc. so using the luma from the green RCA jack is perfect. I still need to figure out a way to strip the chroma from a composite video signal, for the boxes that I can't use the s-video and Y output at the same time.
Jonathan