New Installation of Outlook

I have installed A new operating system for a user,
Windows XP Pro and XP Office including Outlook. When I
recreated her existing Outlook account in the new Outlook
installation, only her current Incoming Mail appeared.
Her Sent Box didn't show up nor her previous Incoming Box
emails. I tried it both as a Microsoft Exchange Server
install and as a POP 3 install. Any help or advice on
this matter would be deeply appreciated. Thank you.
Al Yaboni