For some reason, my Outlook Address Book thinks that a fax number is a valid
e-mail address. When I put a contact name in the address line of a new
e-mail, the auto finder asks me to choose between the normal e-mail address
(SMTP) and the contact's fax number (FAX). When I open the address book,
there are two e-mail types listed in the "E-mail Type" column: SMTP and FAX.

How do I reset Outlook so that it doesn't have this issue?

Thanks.