Dojj, here's a quote from AVForums which you might want to heed
"I made the mistake of buying a £250 VGA - svideo converter thinking I might get a decent result. One word; Rubbish"
This will do the job, but suspect it won't be cheap.
http://www.vtx.co.uk/video/digiboxpc2tv.htm
Best leave it, whenever I've tried to connect my laptop with tv-out to the tv it looked crap (until I got a plasma screen

)