Do you use Exchange as your mail server? If so, check the permissions on the Properties page of the folder.

--
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/article.aspx?id=54

"OsuJennifer" wrote in message ...
We have two computers here at work that have Office 2007; the rest have 2003.
It was a matter of a couple of clicks to share a calendar in 2003 with
editing permissions, I am unable to the same in 2007; when I click "share my
calendar" it sends a copy of the calendar as an email. Is there some way to
edit a shared calendar? I need to be able to do this continuously. Thank
you in advance!