That's easy--just click on any Yahoo! Wallet link in Yahoo! Canada Shopping or Travel, or click the Express Check Out button on your Yahoo! Canada Shopping Cart.
You can also save your addresss and credit card information from an order on Yahoo! Canada Shopping by clicking the \"Save in Yahoo! Wallet\" link on your order confirmation page.
When you sign up, you'll be walked through a series of steps that include registering a Yahoo! ID and password (if you don't have one), choosing a security key, and entering your Yahoo! Wallet and Express Check Out preferences.
If you any problems or additional questions, please feel free to contact Yahoo! Customer Care.