Basically, while going through my video card box the other day was an S-Video converter to a yellow Video-in/out cable that looks like this:

:_:

But upon inpection of the video card my S-Video connection has 7 pins, instead of 4 like the connecter. My question is this: will it still work as normal? Could I hook my computer to a TV like that?

It should, sometimes one end has 4 pins and the other has 7...i think? a pc into a tv via s video isnt that greater quality though

I think what you've got on your video card is a propriatary plug; basically, it's one that was designed by the manufacturer for that card(or their range of cards).
What's normally the case is that it goes from your video card to a little dongle thingy, that then has s-video and/or composite(the regular yellow RCA plug) inputs and outputs on it.

What's your video card exactally?

I think D43MON has a X800, right? Anyway, on my X800XT, the TV Out on it is a seven pin, same as what you were saying - my video card did come with a dongle thingy, which plugs into the seven pin and has two 4 pin S-Video outputs and two yellow outputs (all female), I don't know if yours came with one of those dongles or not, though...

Well the main thing we need to know is the model a manufacturer, we can then work from there. ;)

Xpertvision x800. I'm not particulary worried about quality, but it would be nice to try some Call of Duty on a widescreen TV, or possibly even the King Kong game I'm going to go pick up today.