Your coworker would need to add your mailbox to his Exchange account settings as a secondary account, and you would need to add a new activities group pointing only at your Journal folder.

Signature
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
>I have a situation where me and another coworker are shareing my "Work
> Contacts" contact folder. I am the owner, but he has full rights to that
[quoted text clipped - 7 lines]
> phone calls and both see those entries in the Activities tab for a contact?
> Thanks in advance. ~ Rick...