Quick set up guide for Outlook 2007.

Select the Tools > Accounts menu > New or Change email

Choose the POP3 option

Tick the option "Manually configure the server settings......" and click next.

Choose the "Internet E-mail" option and click next.

Fill in the fields with your details
Your name: your name
Email address: the email address provided to you
Incoming mail server POP3: mail.yourdomainname.com or the server IP address
Outgoing mail server SMTP: mail.yourdomainname.com or the server IP address
Username: your complete email address
Password: your password
Tick the option "Remember password"
Click the "More settings" button

Choose the top button that says "Outgoing Server" and fill in the fields with your details
Tick "My outgoing server (SMTP) require authentication
Make sure the option "Use same setting as my incoming mail server" is ticked too.
Click OK.

Click the "finish" button.