If you're applying to Dragonair... its KA, not DA.
Try Alteon in BNE- they now have the old Ansett A320 sim. QF have A330 sim. Air New Zealand training are easily contacted through their website and lease out their A320- if you feel like crossing the Tasman.
The sim ride is in your 2nd round interview in HKG. The 1st round interview in MEL is a non-technical personality/motivation assesment.
Good Luck
HJ