Setting Outlook Contact Default Address List 

By default Outlook when configured for Exchange use the hosted organization's address lists from the server. When creating new mail  the default selection when clicking to the "To" or "CC" buttons opens the Address book with the organization's address list as the selected option. To change this setting so that an individual's Contact List is pre-selected follow the steps below.

- From the main menu select Tools

- Select Address Book

- Once the Address Book is open select Tools from the menu

-  Select Options

- The first section is "Show this address list first:", choose from the pulldown list which address list you would like displayed first. This is often Outlook Address Book -> Contacts

- Click Apply

- Close the Address Book

Now once this has been changed the default select from "To" and "CC" will check the individual user's address list first. 

Outlook 2003/2007