Go to http://play.clubpenguin.com/#/redeem. Login with your penguin name and password, then follow the instructions. Or if you don't already have a penguin, first create a free account. If you need additional help, check out the How To Unlock Items page.
If you have questions that aren't addressed in our Help Section, please send us an email via our contact support page. We will try to respond to you within two business days. Contact Support.