Hi there, Sorry i don't know much about accountacy , but do they perhaps have different ways of doing things .Sorry for sounding dumb

I think i would apply anyway , just keep on banging out your CVs to agencies , employers , any ave you can. Don't be disheartned by how many you have to put out before you get a bite.
Get th eAus yellow pages and apply to as many big firms as you can where you think your skills are needed as well . This can often be a way of finding a position.Employers like pro-active people. Follow up your CV with a call to show how keen you are . Remember , you are selling yourself - so just keep at it.
I'm sure you'll come up trumps . If not ask the agencies if they have any ideas how you can get the experience needed.
You could suggest a few days trial to show them how good you are and that you are capable of adapting to Aus Accounts ?
In fact i think i would be tempted to include this is my covering letter to employers agencies.
Maybe you can do some Freelance work ? That would then be deemed as experience.
Good luck , don't worry i'm sure you'll find work.