Lost ‘Contacts’ in Outlook on Office 97…

Hi, I need help – we run a small business teaching US Boy Scouts how to sail and after our HP laptop crashed and died we purchased a Fujitsu. We tried to download all our files and folders from our Maxtor back-up unit but all the Boy Scouts of America contacts that we had stored on the ‘Contacts’ facility of Outlook on our Office 97 have not been recovered!!! This is almost disaster, however, although I am not certain they are on the back-up I can see there is an archive folder with .pst files. Can anyone out there help me restore them or import them into the re-installed copy of Outlook/Office 97??? This all runs on Win XP as it did on the old HP laptop.
Thanks, B