The EK-401W supports a maximum resolution of 1280 x 1024 (SXGA). That's over four times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by multimedia projectors that have been around for around the same time as the EK-401W. Latest multimedia projectors graphics resolutions range from 640 x 480 (VGA) to 1920 x 1200 (WUXGA).
We think you might also be interested in some of the alternative projectors that support a resolution of 640 x 480 (VGA)|800 x 600 (SVGA)|1024 x 768 (XGA)|1280 x 1024 (SXGA)|1280 x 768 (WXGA)|1280 x 800 (WXGA)|1360 x 768 (WXGA)|1400 x 1050 (SXGA+)|1440 x 900 (WXGA+)|1600 x 1200 (UXGA)|1680 x 1050 (WSXGA+) currently available including the EK-400X, or the EK-400X both from EIKI which is cheaper.
If you want a projector with a higher resolution then you might want to look at the Benq SW921 ($1,349.00) (640 x 480 (VGA and higher rated)|1600 x 1200 (UXGA and higher rated) and higher rated) or the Benq CH100 ($1,099.00) (640 x 480 (VGA and cheaper)|1920 x 1200 (WUXGA and cheaper) and cheaper).