I am running PS 3 and 960 x 540. I changed the V and H numbers to identical numbers posted in the Z1 manual for one of the 1024 x 768 resolutions, and text seems to be a lot more stable. I am at like 42 h and 75 refresh. Is this ok still shows wide thru and DVD playback with windvd 4 looks good very clear. Also I am using a AMD xp 1700. The numbers posted by Karnis all jittered extremely on my PJ, I about went blind trying to read text and stuff. Any help with proper setting for this projector are appreciated been just shooting in the dark to figure this out. Thanks....