Check out both the Calendar and the Links. I'll do my best to update these, but I'm only one person so bear with me!
You can access this from the tab at the top of the page, and it will eventually give a comprehensive guide to all chess events happening in Melbourne and Victoria. I'll even throw in some Australian and New Zealand tournaments, and some World events that may hold interest for Australians. Sorry if an event isn't on the calendar that you know of or are organising, but just send me the details and I'll put it on.
Again, I'm looking for a comprehensive listing of links to do with chess. I'm starting with clubs and organisations, but I'll add individuals and other chess interest sites that are important to Melbourne and Victoria. If I've missed something, then please feel free to message the link to me and I'll put it on.