The display drivers which need to be written could simulate a standard size and render it in something suitable for the empeg display.

I don't really see it happening, you'd lose the bottom line for the start button, and the top line for the menu bar. So you'd end up with a 2 line screen and a lot of scrolling. Besides all WinCE applications were designed around a 256 color screen, the empeg just doesn't have the pixels to render that reliably down to 4 colors, so a lot of things would become invisible.

And except if you happen to work at microsoft, you'd probably not even get close the the parts of the code you need to modify to use your display drivers. Just buy an iPaq.