Welcome to CS Patrick!
Have a read over http://coffeesnobs.com.au/YaBB.pl?num=1287272931/all as your topic has been discussed there.
Its technically possible to do the job, but but it will require plenty of $$$ and time. To be honest, I wouldnt recommend your course of action with a 110V machine as there is too much to be done.
Ultimately, youd probably be better to sell the old machine and then buy another new machine when you arrive down under. Who knows, there may be something else from Rocket by then to catch your eye.