I just ran across this I2C example for the LPC2148 used in this
Thesis. It's a pretty CooL LPC application too...
http://scholar.lib.vt.edu/theses/available/etd-08142006-101925/unrestricted/uWIP.pdf
Sometimes you have to modify the names they use for the LPC registers.
This example interfaces to the I2C EEprom, 24L256 part, which I've
also used with the LPC2144.
boB