Access the Air New Zealand website and click on the "Koru" link. Click the "Join Koru" button to prompt a new webpage. Enter your New Zealand air points number or username and password, if you have registered with Air New Zealand already.
Check the "No" bubble to prompt the registration processing webpage. Provide a unique username, password and a help question and answer. Choose your country of residence and then click "Continue."
Enter your last name, membership number and your personal access code into the provided text box. Press "Continue" when finished.
Present your credit or debit card information, including your card number, expiration date and your name. As of August 2010, the club cost $250 to join, plus $495 for a one-year membership and $870 for two years. Press "Continue" when you are finished.
Authenticate the purchase by pressing the "Confirm" button. Access your email account to print out your receipt. You will receive your card in four to six weeks.