Fruit Bat is correct. S video to coax cannot be done. The yellow connection is a composite video signal consisting of sync pulses,luminance (brightness) and chroma (colour). The S video connection separates these into discrete signals and sends them on each pin. This is done to simplify the internal circuitry of the devices connected together. Your choices are to get an adaptor,change your graphics card or get a new tv.
click here Coaxial cable consists of an inner conductor and a screen. I'd be very interested how you can send two separate signals (as in S video) down one conductor. Sorry but it can't be done. Suggest you read your own link more closely. The reference to "coaxial" cable is incorrect. It should read "screened".
This is possable dispite whats been posted, however the end result cannot be guaranteed and should be presumed poor.
By the use of a simple cable ( S videdo ) to scart. alows the PC to be connected to a standard Video player.The colour coded plugs must be correctley used and your PC should have all the correct types to fit these.
Thus svideo can provide a link to standard TV connections
Then useing normal ariel cable ( classed above as Co-ax or screened cable ) from the video player output to the TV Downstairs.
the further apart the more strenth will be lost from the signal hence poorer picture quality.
Some systems ( Like the Medion ALDI have on offer actuall have a scart connection .
For the Svideo lead Maplins have them on there site as I am sure many other stores do
I'm talking about coaxial aerial cable - nothing to do with S-video.
I have never, at any point, suggested: "I'd be very interested how you can send two separate signals (as in S video) down one conductor."
What has happened is that the "'t" is missing from my comment: "..As we have made it clear you can connect S-video to co-axial," which is entirely my own fault for not checking properly before posting.
Hence my earlier comment: "A coaxial cable is just that just as with an RF to RF cable." In other words it cannot be used for other than its intended purpose.