I'm not exactly sure about this, but there's something my church uses. It's essentially a set of little boxes, with composite (ew) output, and maybe s-video. Not sure what the range is, but I'd estimate the church uses them at somewhere around 100 ft? Not sure what the input is, I'm fairly sure it does composite, but there's a chance it also does DVI and/or VGA. The brand name escapes me at the moment, but I'll see if I can find out for you.