i've just won(!) a BenQ ds550 projector that i want to hook up to my JVC xa-sa72 dvd. the dvd has video and s-video out as well as your usual scart, optical, coax and av compu link jacks. the pj only has a vga input. i'm sure it's a question been asked before - but where do i get such a cable and are the signals all compatible?