You mentioned that you already tried to configure Microsoft Outlook 2003 but it did not work. What did not work? Do you have a problem sending, receiving, or both? Do you get any error messages? Do you have an anti-virus or firewall program installed that may be interfering? Any additional information that you can provide will help us to guide you in the right direction.
I use McAfee ant virus and firewall and webroot spy sweeper. I got the following error. The password is correct and works on Yahoo.
There was a problem logging onto your mail server. Your Password was rejected. Account: 'yahoo', Server: 'incoming.yahoo.verizon.net', Protocol: POP3, Server Response: '-ERR [AUTH] Error logging in. Please visit http://mail.yahoo.com', Port: 110, Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800CCC92