Hey Elisha, welcome to the forum.
Sorry if this has been answered, but here's how:Originally Posted by Elisha
First you click the Wii Message Board Icon.
Once you're in the Wii Message Board:
Then you click the Create Message Icon.
Then select the Address Book icon.
To view your Wii Number open the Address Book to page 1. After that move the cursor over the left scroll button and press the A Button to view your console's Wii number.