1. Open Outlook Express 2010.
2. Click File, then select Info from the drop down menu.
3. Click Account Settings.
4. Select the Add and remove accounts option from the drop down.
5. In the Email tab, click New.
   Note: If making changes to an existing account, under the Email tab you will see a list of email accounts that exist within Outlook, double click on the email account you wish to make changes to, then skip to step 8.
6. Select Email Account radio button option and complete the following information:
   Your Name: The name you wish displayed when people receive your emails.
   Email Address: The email address you are sending the email from.
   Password: The password used for this email account.
   Re-type Password: The password used for this email account.
   Select Manually configure server settings or additional server types then click [Next].
7. Select the Internet Email radio button option and click [Next].
8. Complete the Settings information:
   Your Name: The name you wish displayed when people receive your emails.
   Email Address: The email address you are sending email from.
   Account Type: Select IMAP from the drop down.
   Incoming Mail Server: imap.gmail.com
   Incoming Mail Port: 993
   Outgoing Mail Server: smtp.gmail.com
   Outgoing Mail Port: 465
   User Name: Your full email address
   Password: The password used for this email account.  Make sure Remember Password is ticked.
9. Review the account information, then click Finish when done

Congratulations, you've just set up an e-mail account in Microsoft Outlook 2010