See http://www.outlookcode.com/d/forms/holiday.htm for some possible solutions.

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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
> Can Exchange administrator schedule events centrally for some/all Exchange
> users? I'd like to add holidays to all users' Calendars so it is displayed in
> their Calendars without adding them individually.
> Thank you.