A window will appear prompting you to enter your contact’s Yahoo! Messenger ID or Windows Live Messenger screenname. For Windows Live Messenger users, ensure you have selected the Windows Live Messenger network underneath the “Network” drop-down menu, then click “Next.”
You can also click “Choose a Contact from Your Address Book” to select contacts from your Yahoo! email. (Note: If the contact is not part of Yahoo! Messenger, they will receive an invitation to join from your screenname).
Reproduced with permission of Yahoo! Inc. ©2008 Yahoo! Inc. YAHOO! and the YAHOO! logo are registered trademarks of Yahoo! Inc.