Global address list does not appear in mail merge
 

I'm trying to use Outlook 2003 to send an email to multiple persons using
mail merge.

1) I create a new message
2) Go to Tools/../Mail Merge
3) Document Type = Email messages
4) Use current document
5) Select recipients = Select from Outlook contacts
.. and here only appears my private contact book, but it doesn't show
the Global Address list.

Please help!
Thanks in advance
Gaspar