I have written Blinky for the ARMMite Pro (LPC2103) using timer0 and interrupts. I threw away the Coridium software and used WinARM. I posted everything here: http://ieee.ucsd.edu/news/item.php?id=104
Hopefully this will save somebody some time!
Just FYI Coridium’s software uses WinARM combined with a GUI (MakeItC) including a terminal emulator and a download utility, load21xx.exe
And the installer configures WinARM for the ARMpro.