Did you apply the the Technical Refresh? Make sure that both version of
Outlook are at the same patchlevel.
For more info on being compatible with any version of Outlook;
http://www.sparnaaij.net/howto/downgradefromoutlook2003.htm

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Roady
www.sparnaaij.net
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Question of the month: How to manage general contact info.
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> Hi all,
> After I installed Office 2003 Beta on my new computer, I wanted to move the pst file and open it on the new computer. Outlook refused to open it,
leaving this errormessage: "The file outlook.pst is not compatible with this
with this version of the Personal Folders information service. Contact your
administrator."
> I have tried to export all the data and I tried to archive them, but when I try to open the file on the new computer, the same message shows.
>
> As I recall I can't remember installing it any different then the last time and I have the same OS and Office version. Please advice!!!
>
> Best regards,
> Stefan