I have designed a form with custom fields for a business contact. When I
print my address book, the custom fields don't show up, but everything
standard does.
What steps are you following to "print your address book"? Since Outlook has no separate address book, it's not at all clear what you might be doing.

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Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I have designed a form with custom fields for a business contact. When I
> print my address book, the custom fields don't show up, but everything
> standard does.