Go to www.crazydomains.com.au
Click on the "My Account" tab
Select "Account Manager"
Enter in your username and password
Click on the Domains button on the top left of the page
Your domains will then be listed
Click on the domain that you want to work with
Click on the "Registry Key" link on the top
The password details are then displayed
The following is a video taking you through the whole process
This video is best seen on the full screen. Just click on the icon at the bottom right of the video (see image below).
To exit full screen just press escape