I have an Svideo capable big screen tv and I have an IBM thinkpad with Svideo capability. And when I output to it, I can output 800x600 and it is crystal clear rock solid. It's great! On my Toshiba laptap, it has a composite output and I tried sending that signal and it was quite a bit blurry. On my home pc, it has an s-video output from the ATI All-in-Wonder and the output is a little tilted and messy, clearly better than composite but jagged edges and occasional "vibration" occurs.. so YMMV.
Calvin