Any digital display (flatpanel or projector) has two resolutions that matter: the native resolution which is what all images will be displayed at and the accepted input resolutions what signals can be accepted and deinterlaced/scaled to fit the display.It is normal these days for a projector one with say a 800600 native resolution to accept the common standard signals (including 4801, 480p, 720p and 1080i). Note that this includes HD resolutions.