Well, Pink Studs, I am not sure about these auslan classes in Sydney.
All I know is the courses at TAFE and at DEN though as you may have been aware that the next course is in the new year, it would be worth your time if you joined or enrolled for the 2009 acamedic year, I am not sure if it is not quite expensive!
But as I have mentioned, I am volunteering in teaching in Canberra and I can even help a little bit of teaching over ooVoo, Viable Vision (Computer Based Videophone) or MSN and whatnot if you wish. Just let me know via PM though.