The highest resolution supported by the NEC PX602 is 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by 10000:1 contrast ratio data projectors that are a comparable age to the PX602.
A 1920 x 1200 (WUXGA) graphics resolution is actually the best supported resolution across all 10000:1 contrast ratio data projectors that are a comparable age to the PX602.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution across comparable types of projector.
If the resolution of this 10000:1 contrast ratio projector is not high enough for you then you might want to look at the Barco CTHD-61B ($9,350.00) (2560 x 1600 (WQXGA and cheaper)|640 x 480 (VGA and cheaper) and cheaper).