Instructions for making an addition to an address book entry while in Outlook Express.
1. Press control, shift, + B, to open the address book.
2. Tab 1 time to get into your address book list view.
3. You can arrow down the list until you find the entry you want to update, or you can use first letter navigation until you have the entry you want to update highlighted.
4. With the chosen entry highlighted, press enter. You will land on the summary page.
5. Control + tab 1 time after opening the address book for the name page.
This is where you would make changes to a name & email address.
Control + Tab 2 times to the home page.
6. Tab to the fields you want to change. This is the page where you enter mailing address, phone, fax, & mobile numbers, & web page link / URL. You don't need to press enter to open any of the edit fields, they are all open by default once you press enter on an address book entry.

After you make your updates to an entry, tab to okay, press enter to save your changes / updates, & close the address book list view. If you don't press enter on okay, the changes won't be preserved. Now, press escape to close the address Book & return to Outlook Express.