Are you talking about a wire installation:
http://www.duomodchip.com/english/install/duox/wire.jpgor the board installation:
http://www.duomodchip.com/english/install/duox/direct.jpgIf you messed up the LPC I would strongly encourage you to send your stuff to a Modder in the B/S/T section because these other installations need an even more delicate touch than the header.
Also note that the LPC ground pin is tied to a ground plane which is very stubborn to heat up. Too little heat and it won't flow, too much and the via pops out and the board scorches.