Multiple TV on HP Pavilion slim line

[TerryC]

This question has probably been asked a few hundred times, but here I go. I bought an HP pavilion Slim Line s7520n, the video card is mounted on the main board. The video card has an RCA as well as an S video output, so when I bought this paper weight I assumed it would work with Hoster. I've contacted HP and they say it won't work in a simultaneous mode. After spending $600 I not willing to give up yet.

Should I give up or is there something else I can do, I know the video out works because I can switch from monitor to TV readily. And yes I know how to set it up under properties settings etc.

Thanks TerryC