Clear autofill names in Outlook email

Aside from “hitting delete” on the auto-fill in the address list when using outlook, you can also delete the whole list by:

From Outlook, click Tools\Options
Email Options\Advanced Email Options
Deselect ‘Suggest Names while completing To, Cc and Bcc fields’
Save, close Outlook, then reopen and re-enable that setting…

Here is the “long way”

http://support.microsoft.com/default.aspx?scid=kb;en-us;287623&Product=out