Err why would you travel half way around to the US when you can get the qualifications in Aus, and the qualifications you get overseas aren't automatically valid here?
Waeco have you done any packing before?
You have to be a member of the APF, over 18, have the recommendation of a Chief Instructor or Rigger and pass a couple of exams.
You can be issued a packer rating by either a Rigger Examiner or a Chief Instructor who holds at least a Packer 'B' rating. Go to your local drop zone (the bigger the better) and start chatting to them.