I have a Optoma pro 250dx dlp projector. I have a computer with component option pushed through the seven pin s-video port on the video card. This then goes into my Sony AV Receiver, then it goes into a component-vga cord into my projector where the projector reads the component signal in the vga1 port. I also have a dvd player component into the AV receiver then to the same cord to the projector.
Problem is that when using the computer, I get ghosting, but the DVD is perfect (so it can't be the cord) and the projector menu is perfect. My computer is older, so I am first to suspect the ability of the video card to do a good job.