Email files

We moved our laptop c: drive to a remote hard drive using
BackPack. This included the MSOffice 2000 program with
Outlook [which we use for email] and local emails inside
folders on Outlook. Now that we are trying to restore
parts of the hard drive from BackPack's remote hard
drive, we cannot find our emails that were inside
Outlook. We did not archive them, but they were inside
folders on Outlook. Are they gone forever? We cannot
seem to find any *.pst files or other that represent
these hundreds of emails that were sitting inside
Outlook. We are using Win98 OS.