Dear,
You may need to copy the following other than the pst.
outcmd.dat - Registered Microsoft Exchange extensions (.dat)
Outlook.srs - Send/Receive settings (.srs)
Outlook.NK2 - Outlook contacts nicknames (.nk2)
Outlook.xml - Navigation Pane settings (.xml)
The four files mentioned above are usually located at C:\Documents and
Settings\computer_login_name\Application Data\Microsoft\Outlook. There is a
set of these files for each profile you may have created in Outlook. When
rebuilding a system, copy these files to an external source and then recopy
them to the same folder when the rebuild is complete.