I ported this directly from the official supplied LPC2129 example. The hardware is the IAR/Olimex LPC2378 board entitled "LPC2378-SK" (2007) Rev. A. If you want to see the changes I suggest you diff the official example with this one. To build the code just unzip the example and find the eww project file in fol Tder ARM7_LPC2378_IAR. Then is should work out of the box. If you have the same hardware I changed the code so that three LED's (one is the LCD backlight) will flash at different rates. Also the serial port does work 38400 8E1. The system tick is 1ms.
FreeRTOS_LPC78_IAR.zip