I recently had to re-install my blackberry operating system therefore losing all my data on the handset, specifically my contacts database. Yesterday I tried to re-sync my blackberry to my Outlook contacts (which i do regularly as a backup) however i wasnt paying attention and I inadvertantly sync-ed my Blackberry contacts (ie none) to my Outlook contacts, thereby erasing my outlook contacts. How do i retrieve a version of my outlook contacts back please? I searched for .pst files on my laptop and found them. However these are backups from yesterday evening so wont have the original contacts on from earlier in the day.