With regards to s-video inputs on tv scart yes most tv's support this, sometimes the tv will automatically switch between rgb/composite/s-video other times it's a manual setting (perhaps on one scart only). Are you thinking of maybe using the tv out on a graphics card?
from maplins click here this link will take you to the maplins site..If you look for audio visual cables.you will find a Scart Phono / s-vhs adaptor. £11.99 which is just what you are looking for I think.
It's actually for a digital camcorder which has an S-video output. The TV has scart but no separate S-video input socket. Maybe implies that the scart doesn't have S-video either, so as some of you have pointed out, I'll get a black and white picture.
I could instead use the video (PAL composite) output from the camcorder, but then the high video quality of the camcorder gets mangled by PAL.
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