Check out the Yahoo website for instructions on how to setup your account in
Windows Mail (Outlook Express settings work also). There you will find the
server names and port numbers required to setup the account. The setup is
done at Tools - Accounts in Windows Mail. On the "General" tab you will
fill in your personal information such as the name you want displayed on
your sent emails, your email address, etc. But you need to get the server
info from the website for the "Servers" and "Advanced" tabs. In the US, a
Yahoo PLUS account is required. Not sure about your location.