I have been getting the following message when trying to add an entry to my outlook calendar (Outlook 2007) "cannot save item.  Failed to INSERT message in Z1cache"  any ideas on how to fix this?
Outlook has a Detect and Repair Utility which I would RUN to MAKE sure there is no corruption, also does this system connect to an exchange mail server or only mail with an internet based email service?

http://support.microsoft.com/kb/924614Thanks - It is connected to an exchange mail server I think.  How to I run the detect and repair utiliy??This info below contained in the link in prior post.

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On-demand detect and repair

To run the Detect and Repair feature in your 2007 Office programs, use one of the following methods, as appropriate for your situation.

For 2007 Office programs that use MENUS

    Start the 2007 Office program.
    On the Help menu, click Office Diagnostics.
    Click Continue.
    Click Run Diagnostics.
    If a PROBLEM is identified, Office Diagnostics may offer to run the repair PROCESS.

For 2007 Office programs that use the Ribbon

    Start the 2007 Office program.
    Click the Microsoft Office Button, and then click program_name Options.
    In the program_name Options dialog box, click Resources, and then click Diagnose next to office diagnostics.
    Click Continue.
    Click Run Diagnostics.
    If a problem is identified, Office Diagnostics may offer to run the repair process.