First, you will need to start Microsoft Outlook Express. This can be done several ways: By double-clicking on the Outlook Express icon on the desktop (if available, and as shown by the icon below to the right), by going to Start-->Programs-->Outlook Express, or by single-clicking on the Outlook Express icon in the Quick Launch bar next to the Start menu.

Click on Tools and choose Accounts.

When the Internet Accounts box opens, choose Properties.

You may change the Mail Account name to Donet and your E-mail address to @donet.com if you wish, but it is not necessary at this time.

Click on the Servers tab.

The Incoming mail (POP3) server should be changed to pop3.donet.com
The Outgoing mail (SMTP) server should be changed to smtp.donet.com

That is all you will need to change.