That function does not exist in Outlook but here's a link to an add-in that
will do it.

http://www.sperrysoftware.com/Outlook/products.asp

--
Judy Gleeson - MVP Outlook
Acorn Training and Consulting
Canberra, Australia
www.acorntraining.com.au
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"Pastor P" Pastor wrote in message
...
How do I set up Outlook so that when I reply to an e-mail it will
automatically address the e-mail address of the the person that I respond
to
in my contacts address book?