I am using an acer aspire that has an ATI Radeon 2400 graphics card. the card has 3 outputs, VGA, DVI, and S-Video. I am using dual monitors with the DVI and VGA, but it won't let me set up a third with the S-Video. does anyone know how i can do this?

I don't think it's an actual "S-Video" out but it's one of those TV-out connectors, and you need an adapter cable, that gives you a series of output lines, either S-Video, or component. I could be wrong of course.

I also remember, when I had an ATI card, I had to *enable* TV-output through the driver UI

You are correct on one part, it is labeled tv out, not s video. but its not that i'm having trouble making it work, see i can make it display on my television, but not at the same time as both monitors. it will only let me use 2 displays at a time, and i am trying to use 3, which makes snse to me because the card has 3 outputs.

Ah, right. It's something to do with Windows not allowing you to have more then 2 display on one card if I remember correctly, though there is a way around that as I've managed it, and I know my roommate is using 3 displays off one card as well.

Are you using the ATI drive UI or going from the Window's Display options?

any advice on getting it to work?

sorry, yeah i'm using the ATI Catalyst Control Center software