I've downloaded Multibit Bitcoin Client, but I don't know how to view what my wallet address is? I am attemting to purchase some bitcoins with a cash deposit to my bank using this site: https://www.canadianbitcoins.com/index.php

The site requires me to validate my wallet address so they know where to deposit the bitcoins. I am very new at this and I don't know what my wallet address is. I don't even know if I have one yet, becuause all I have done is downloaded a bitcoin client (Multibit).
Click 'Receiving', then look for an address.