The ability to have pre-scheduled OOA messages is strictly an Outlook2007 feature. Whether it is exposed as a web service for programmatic access would be a question for an Exchange dev forum.

--
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

"Von Ryan" Von wrote in message ...
Hi,

In Outlook 2000/2003, is it possible to customize Out Of Office so it can
have the start and end dates that will be available with Exchange 12?