I would recommend the course run by Alan Menzies from the body control group (not related to the UK group).
I would not recommend any physio lead courses in Australia as they do not deal with the entire pilates repertoire. That is unless that is what you are looking for, a course that includes some pilates exercises in a remedial environment. This however would not be significant enough training to consider yourself as a Pilates teacher.
Here in the UK the best courses are run by the Pilates Foundation UK (www.pilatesfoundation.com). The full training takes 18mths - 2 years and can only be taught by someone with a minimum of 5 years post grad experience in teaching the method. This should be something worth considering when assessing your options in Aus.
best of luck