You are correct. Outlook holds open any .pst file used during the current
session until you completely exit Outlook. Close the .pst file in Outlook,
exit Outlook, then restart Outlook, and you should be able to send the .pst
file.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> Thank you for the insite oon how to make a new data files
> compatible with Outlook 97-2002. I need to insert these
[quoted text clipped - 5 lines]
> files in Outlook express or how do I get these files to
> someone else via email?