The easiest way for most Australians to become millionaires is to book a cheap flight to Bali and change $100 into rupiah, the local currency. At an exchange rate of almost 10,000 to $1, that's 1 million. But don't tarry - Indonesia's finance minister wants to end the fun. The country's government and central bank are discussing re-denominating the currency by knocking off three zeroes. Next year the ubiquitous red 100,000 rupiah note would be labelled 100 rupiah, and so on.