first of all, is a belkin video bus anygood?
second, you probably need a video card. i have a pinnacle one (£30) but will be selling it as it says it is perfect quality but it is bollocks!
you can get a pinnacle video box which is an external card which has all sorts of inputs
http://www.pinnaclesys.com/ProductPa...85&Langue_ID=2
but is £150, to me this looks like the only solution!