You don't need an All in Wonder to get S-video out...
I've got an ATI Rage Fury, and that's got the s-video out, without the extra bits from the all in wonder (At the time, I didn't want video in)

I use the s-video output with the ATI software DVD player, and the output quality is great. (Windows text isn't so good, but winamp on double size is fine)

Jazz
(List 112, Mk2 12 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)
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Jazz (List 112, Mk2 42 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)