MS officially supports Outlook 2003 COM addins running on Outlook 2007. Look
at the information from the Outlook team on their blogs.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm


"SvenC" wrote in message
...
Hi,

Just reference and develop with the Outlook 2003 PIA, the code will
run with no problems in Outlook 2007.

You are walking on unsupported grounds hers.
See this Microsoft blog:
http://blogs.msdn.com/andreww/archiv...of-office.aspx

--
SvenC