Anyone have any ideas on how to configure S-Video / S/PDIF in the xorg.conf?

I have a Dell i8500, 512MB, NVidia GeFroce4 64MB and a 1920x1200 monitor panel on it.

I haven't been bothered until now cos there's usually been more pressing issues, but the rest of my machine is beasting along. I've Googled this but documentation is sparse and usually incomplete.

BTW I am using Mandrake 10.1. Any suggestions appreciated.