i found that out during the week!
The Classification Board and Classification Review Board
i actually phoned the OFLC early in the week to ask if this free multiplayer version of postal 2 was illegal to play in Aus and no one could answer me lol
they eventually took my number and said there would call me with the answer... still no word
i'll call them tomorrow (friday) if i haven't heard anything
i'll post the answer when i get it