Depends entirely upon the format in which these addresses exist:
http://www.outlook-tips.net/archives/2004/20041105.htm

--
Russ Valentine
[MVP-Outlook]
"Susievintage" wrote in message
...
I am using Outlook 2003. I have just joined a new club, and someone has
sent
me an email with all the members' email addresses in the "To" box. How
can I
drop them all into a new distribution list, short of typing them in one by
one (there's 150 of them!)?

Many thanks for any help.