Setting up Outlook 2010 as email client for Verizon Yahoo email fails

I am trying to set up Outlook 2010 as my email client in Verizon Yahoo. I have reached the Internet E-mail Settings window in Outlook 2010 and entered the settings specified in the Verizon Yahoo! Internet Help file titled "How do I receive my VerizonYahoo! Mail using a different email program?". When I test the account settings I get an error message telling me that the server responded : 530 authentication required. Help.