1. Open Outlook Express
   
2. Go to "Tools" and click on "Accounts"
3. A "Internet Accounts" window will pop up. Click on "Add", then click on "Mail".
4. This will start up Internet Connection Wizard. Enter your name where it says "Display name:" and click "Next" at the bottom right.
5. Enter your Email address in the input box. This does NOT have to be your "username@yourdomain.com"( you can use "john@yourdomain.com, webmaster@yourdomain.com, etc). Then click Next.
6. In the Incoming mail field type mail.yourdomain.com
   In the Outgoing mail (SMTP)field type mail.yourdomain.com
   Click Next.
7. Now type in your username that you have setup from cpanel using the following format: "yourusername@yourdomain.com"
8. Just click Finish and you're done!