the way i would do it is: connect tv to snd crd (output) and to grfx crd (tv out) but there probably a better way, just wait and get a few more replies to your post
You can either get a graphics card which supports TV out or buy a little box which converts VGA to scart. I bought one once from maplin for £70 but took it back in the end. My mate watches films from his PC on his tele (he hasnt got a TV out graphics card) and I doubt very much he spent £70 so there must be cheaper methods around now. Have a look on ebay. btw, Windows looks crap on the TV, the only thing its good for is games and films imo. Not unless LCD tvs look better. Or HDTVs of course
I've tried this, I got S-Video cable so I could run it from my PC around my room to my TV then I got an S-Video (plus phono) to Scart adapter, it never worked though *EDIT - I just had another go and got it working, although I can't use 3 screens at the same time so I decided not to go down the PC - TV route.