Try the sponsor in Melbourne first.
The Coffee Company in Balaclava, a veritable aladins cave of machines, service and advice, oh and beans too. http://www.coffeecompany.com.au/AboutUs2.php
Alan Frew from CoffeeGeek may be able to help.
Cottles in South Melbourne
Moccopan in Preston if you are desperate (Not bad after sale, but not that keen to demonstrate before)
Look up coffee in the yellow pages on line.