Yes, it can be exported and imported.
No, it can't be done from and into the pst-file because it's in the Windows registry instead.
The full procedure is described in http://support.microsoft.com/?kbid=197342
Hope this helps.
Kees
I have looked on Slipstick and other sites but cannot find information on importing categories from another Outlook pst file. Can it be done?

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