Go to the following menu:

Tools --> Services in Outlook 97
Tools --> Accounts in Outlook 98/2000/2002
Tools --> Accounts then Add --> Mail in Outlook 98/2000/2002 Internet Edition

Highlight internet mail and then push the properties button.

Fill in the correct information as indicated below:

Full Name: your full name
Email Address: yourname@yourdomain.com
Internet pop Mail Server: mail.yourdomainname.com
Internet smtp Mail Server: mail.yourdomainname.com
Account name: yourname@yourdomain.com
Password: The password for the pop3 account.
** Check the box "My server requires authentication".