When you register your Canadian bank account, PayPal makes two small deposits to your bank account, each for an amount between .01 CAD and .99 CAD.
These deposits should post to your bank account within 2-3 business days. To find the amounts of the deposits, you can look at your online account statement or contact your bank's customer service department.
When you know the amounts of the deposits, log in to your PayPal account and click the Confirm Bank Account link on your Account Overview page to enter the amounts.