You can send an IM, text message, email, or place a computer-to-computer call from the Address Book tab using Yahoo! Messenger:
Please Note: You must have the required information in the "Address Book" field to perform one of the above functions.
Where's the Contact Customer Care button? With so many improvements to Messenger since the version you're using (lots more features and reliability), we figured you're ready to move up. So get your upgrade and with the new version, rest assured if you have questions, you’ll find that friendly button on its help pages.