i am totally new to this forum and not very well versed in technical matters concerning projectors so please be forgiving if my questions seem silly but..... I have a dreamvision dl500 with which i am generally happy except for watching sport (especially football) and also with gray line artifact (was really bothersome in the harry potter dvd). the projector is hooked up via an s video connection through a marantz preamp. I dont have a line doubler or screen (projection wall newly painted flat white).DSS (not HDTV receiver) also connected via s video. ?any recommendations on improving my system ie scaler, screen, HDtv dish, progressive scan dvd? Like i suspect it is to most of you money is a big consideration and will only do one thing at a time. Was thinking of starting with an iscan pro or even maybe a dream vision optimizer scaler (cant find a price on the internet, anybody know about how much and how well they work?) Any advice would be greatly appreciated.