Birder,
Welcome to the EK forum!
You'll find the info you need here:
http://www.skywards.com/Mileage_Calculator.aspx
You will need 25,000 miles for a return Y-J upgrade (flex ticket) or 32,000 miles if you're on a saver fare for AKL-SYD
The Skywards website should be able to give you all the detail you need.
Last edited by eightblack; Nov 16, 2010 at 8:38 pm
Reason: The Ung1 correction machine!