Outlook - get contacts/e-mails from old drive

Hello,
I have installed a new drive on my PC - and done a clean install of XP and Office. My original c: drive is now slave drive F.

I had assumed that I would be able to search my old drive for .pst files and import them into my new install of outlook, as well as doing this with all my other files/settings/favorites etc. Using search I can only find one .pst file on my F: drive - a contacts file - but it is only 513KB in size, and last modified in March 2009. I had well over 1000 emails on my old outlook setup in various folders which I keep for reference. When I tried to open this file - outlook tells me that "it is not compatible with this version of the Personal Folders information service".

I was using everything up to last Thursday - and the drive hasn't failed - I just wanted a clean reinstall because everything was working so slowly.

Can anybody advise, or point me in the right direction of were to look for help? I have googled, and looked on Microsoft Knowledge base - but cannot find anything relevant.

Thanks
Owen