This may be a bit late for Hoggy (original post 21/06/2012) but......
I had a key including electronics done for my 2010 GU VII CRD DX by Mr Minit franchise in Darwin. Starting with the new key was at best - RANDOM, mostly it wouldn't work. Took key back and Mr Minit man did another with same result. Eventually refunded my money.
I took the vehicle to Darwin Lock and Key (Coconut Grove for Darwin locals) to see what they could do... Turns out later Patrols need special attention for the new key electronics to work. Darwin Lock and Key was also $15 cheaper than Mr Minit with the bonus of a key that works every time.