international

First you will need a ITIN (Individual Tax Payer Number), applications are on the IRS site www.irs.gov will take 8-10 weeks to get, and copies of documents must be notarized at a U.S. Notary (Consulate or Embassy in OZ.)

You will also need an address in the states with proof through a bank statement, or utility bill. (Mail Boxes Ect, or a relative will work fine)

Then you can apply for a secured card through AMEX, or a Visa/M.C. through United National Bank.

Option 2. AEA Bank (link on this sites home page) will give it to you secured and with heavy fees, I sujest option 1!