I like to contribute my work for my uLCD display from 4dSystems (http://www.4dsystems.com.au/).
It is a small static class with all the graphic and touch functions that can be used with the
serial communication protocol firmware (http://www.4dsystems.com.au/prod.php?id=87.
This firmware need to be loaded into your display.
Please note that every screen has his own firmware.
for the code see: http://www.fezzer.com/project/183/4dsystems-ulcd-graphic-driver-/