The user's Master Category List is held in the Windows registry in versions before Outlook 2007, so you'd use registry methods, not Outlook techniques. See http://www.slipstick.com/outlook/olcat.htm

--
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

"John E." wrote in message ...
I need to embed some code in my folder based application that will insert
custom Categories into the Outlook Master Categories List. The source of the
custom Categories are a set of string records in an Excel Spread sheet. I
know how to load the strings from the spreadsheet and have studied Sue
Mosher's technique in section 6.6 of her book that uses the Split/Join
functions and arrays, but that only inserts a category in place of an
existing category in an item...not in the Master Category List. Can anyone
advise me or point me to how to do this? I can't find any references on
program access or the object model for accessing the Master Category List.
--
John E.