I have just set up a HTPC for my Ellie. It is an 850MHz Duron, 256MB of RAM, a Voodoo 3 2000 Graphics card, A RealMagic accelerator. When watching in VGA, I get this shimmering effect along the vertical lines on the film, like the light is changing and on the REalMagic I get a large black horizontal line that moves up the screen. Has anyone got any ideas what could be causing these two problems? Any help would be gratefully received.