outlook 2007 address book doesnt work after win 8 upgrade

I installed win 8 over xp pro. I then needed to reload office 2007 which included outlook. mail, tasks, contacts all work fine. my address book is lost. I copied the pst files before updating. I reloaded the pst but I get an error message saying it cant fine anything. I then reloaded the new pst and all is fine except no address book. I have average computer knowledge. thank you