Here's the deal, I was thinking very hard about modding one of my Sega consoles to output S-Video. But the more I look into it, RGB might be better.
No modding of the console is required, it outputs RGB through the A/V socket.
Of course this is a somewhat more expensive route, but the picture quality is better, especially on an LCD TV!
Of course since I live in the good ole' US of A, I have to get a SCART/Component converter.
I have found a few Scart RGB cables for the Genesis on Ebay out of the UK.
As far as the converter, I am at a loss.
Anyone running RGB/Component on their Genesis? What setup are you using? You have screenshots?