Hi sAnTos,
PFMigrate will not migrate public folders between Exchange organizations.
You'll need to use inter-org replication tool to replicate free/busy info
and public folder content between organizations.
Please refer to the Exchange 2003 Deployment Guide, specifically the
Inter-Organizational Migration chapter.
http://www.microsoft.com/technet/prodtechnol/exchange/2003/library/depguide.mspx
Also, here's the direct link to download the inter-org replication tool:
http://www.microsoft.com/downloads/details.aspx?familyid=e7a951d7-1559-4f8f-b400
-488b0c52430e&displaylang=en
Hope this helps!

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Eric Tam, MCSE
Microsoft Exchange Support
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> Hi
> I am going to migrate from Exchange 5.5 to Exchange 2003
[quoted text clipped - 9 lines]
> Thank you
> sAnTos