Outlook on XP doesn't recover all emails in pst file from Windows 2000

[emaildmp]

I have pst files which have emails from around 2001 to the present. In
Sept 2005 I swicthed over to a machine running Windows 2000. Now that
machine died so I swicthed to a notebook running XP Home. When I copied
the pst files to the Local Settings/App data/Microsoft/Outlook folder,
everything is there from 2001 through Sept 2005, but there is nothing
showing up from Sept 2005 to the present. I am sure hundreds of emails
in the period Sept 2005 to Aug 2006 are in those pst files. The one
called mailbox.pst has a modified date of Aug 2006. And yet none of the
past year's emails show up in Outlook. What to do?

 

[K. Orland]

What size is the PST?

 

[emaildmp]

mailbox.pst 420 MB is the most recently modified file (8/06). There's
an archive.pst 292 MB (modified 7/06). There's outlook.pst 244 MB
(modified 12/05).