as long as ya graphics card has tv out connector and as siarad said scart plug into back of tv and s video cable from scart to g/card and audio cable from soundcard line out to audio connections on scart connector
As mentioned above a graphics card with TV out is probably your only option, it's OK for watching movies, but the resolution on a TV is s**t compared to a monitor, probably down to the dpi, so don't expect to be able to use a TV as a substitute for a monitor.
I might be wrong, but i wan't to conect PC to TV and was told to get a cable from BELKIN, it has all the right plugs/leads etc. (BELKIN f8v351-o5m ) about £25 . Don't take this as gospel as i am new to all this and i could be giving the wrong info!!!!!!!!!!!!!
A nVidia GeForce 4MX 420 64mb ?? (as fitted to MEDION 2530 PC) it has a round (yellow) socket and a mini din plug(????)(which one is the TV out??). The belkin cable has two cables and a scart adaptor with it. I was thinking it was the right one (but i am unsure now).