I wanna be able to connect my PC to the tv in order to watch movies, etc from my PC on the bigger screen. How do I do this without buying a new graphics card?

Can I buy a PCI card which will allow this? Does it cost much?

I am clueless about this - I owned a 4MB ATI All In Wonder Pro video card a few years (still have it) but that's all I know about tv-out.

Thanks for the help.