install outlook 2007 trial and email the calendar to create an ics, then
save it (if you do this on a different computer, send it to your self so it
can be downloaded on vista) - the vista calendar will open it easily.

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Diane Poremsky [MVP - Outlook]
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>I wish to import my Outlook 2002 (XP) calendar so it can be integrated into
> the new Windows Calendar which is part of Windows Vista. When I imported
[quoted text clipped - 9 lines]
> does
> not work either. Can anybody help?