Go to one of those third world countries and become a doctor (I'm sure all you need to know how to do is pronounce someone as sick, then stick 'em with a needle... At least, that's all I ever see them do on those damned ads!).
It'd be a good way to use your degree
But seriously, Australia's a beautiful place, so you couldn't have picked a better location to start your new life.
Just make sure you get a coastal area, and preferably (for me at least) nowhere near a city - They're full of wogs, pollution and pigeons
Used to live in Sydney when I was younger... Damn am I glad I live on the coast now about 2 hours freeway drive from the city!