This is Outlook 2003. A hard drive has been replaced in a machine and the pst file was restored from a backup. Previously, when creating a new email, once a letter was typed in the "To" box, a drop down box would appear with all addresses beginning with that letter. After the restore, the drop down box is empty. It is being gradually repopulated with the email addresses of people who have been mailed to since the system has been restored, so it is working. I would like to recover the old list and link it if possible. My question is where did the prior list go? Was it a part of the old pst file or is it a separate component (a pab file maybe)? Or is it there somewhere and it hasn't been linked properly to show all the previous listings? Thanks for any help in clearing this up and explaining the configuration. I am not an Outlook user and this is my first experience with the software.