WinCE apps rarely support a 640x480 screen - most apps assume a 320x240 resolution and are shipped with resolution dependent resources (icons etc.) in which case the OS pixel-doubles the screen to 640x480, no gain in real estate mainly sharper text. The OS can be forced to display 320x240 apps in native 640x480 resolution at which point most icons and text becomes way too small to be useable, assuming the app works at all. I dread to think how badly WinCE will stuff up a screen resolution of 800x480!