"Share My Calendar" is missing

Today when I tried to share my calendar, but can't find it in outlook.
Cannot share a calendar in Outlook 2003 because "Share My Calendar" is missing

The "Share My Calendar" link is missing in Outlook 2003.

In Outlook 2003, when you click on Calendar, only the Open a Shared Calendar... link is present. The Share My Calendar... link is missing from the left side of the window.

This problem can occur if Outlook 2003 is configured to use Personal Folders instead of the Exchange Mailbox. To resolve this problem, you must configure Outlook 2003 to use the Exchange Mailbox.

To configure Outlook 2003 to use the Exchange Mailbox, do the following:

1. Close Outlook 2003.
2. Click Start > Control Panel.
3. Double-click Mail.
4. Click E-mail Accounts.
5. Select View or change existing accounts and click Next.
6. Select Microsoft Exchange Server from the list of accounts.
7. From the drop-down menu labeled, Deliver new e-mail to the following location:, select Mailbox - Your Name. You should not have Personal Folders selected.
8. Click Finish.

Open Outlook 2003 to verify that you can now share your Exchange calendar.