Michael points to the next STUG meeting in Sydney:

I'm presenting at the Sydney Smalltalk Users Group on the 16th - that's next friday. I really enjoyed the last trip I had to Sydney and met up with this group. Last time I met with them was about two years ago and I showed them the early WithStyle and EzyXML. This time I'll be showing the alpha version of WithStyle4 and how to build UI's with it.

It's taking place at:

Norman Self Room Level 3, 280 Pitt St, Sydney 2000 (Sydney Mechanics' School of Arts).

The building is between Park and Bathurst Streets. It also the location of the ACS (Australian Computer Society).

Google map here

The STUG meeting I attended in Sydney (2 years ago now) was a lot of fun - head on over if you're in the area.