The Outlook import/export function doesn't support user-defined fields.
You'll need a 3rd party product to accomplish that (like ours - link below).
You can also look at http://www.slipstick.com/addins/contacts.htm
Karl

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Karl Timmermans - The Claxton Group
ContactGenie - "automated contact importer for MS Outlook '2000/2002
http://contactgenie.claxton.com
> I'm trying to import an Excel spreadsheet to an Outlook
> 2002 contacts folder. When I get to the "map custom
> fields" dialog box, the user fields I added to the
> contacts current view don't appear, and there is no
> button for adding new fields in "map custom fields" (as
> Excel help says there should be).