I'm trying to fax a document from Word. After using 'send
to' fax dialogue box, my Fax Wizard started up. I
completed all of the steps, including filling out all of
the fields. When I click on 'Finish', the Wizard says it
is preparing to send the fax. Then I get this message from
the 'help' character:

The wizard could not fax the document. Unknown mail
address.

All it lets me do is press 'ok', with no other
explanations. I've looked for a field for recipient's
address, but didn't find any.

What can I do to fix this problem, and send my fax?

Thank You!