Thanks to rnatalli for Projector Cental info. It's a good start. I have a new problem. I watched a Netflix streaming movie on my PS3 for the first time, and every so often, maybe 5 to 10 min intervals, the video signal would be lost, the screen flash bright static for a second, then return. A couple of times the Acer lost the video connection altogether, which took a few seconds to correct. No problems with my Verizon Fios, haven't tried a dvd. The PS3 gui is stable (and looks great!). My setup goes PS3 > HDMI > Monoprice 1x4 switch > Monoprice 34' HDMI to DVI cable > Monoprice DVI to HDMI adapter > 3' HDMI cable > Acer.
Never had this problem with my Barco 808 (which was modified for 1080p), tho the DVI went straight in, no adapter.