This is your 3rd post on this issue, please try to stick to one thread, in others you said outlook which is very different than outlook express, outlook express no longer exists, it is now "windows live mail".
The database for outlook express is not a *.pst, it is a *.dbx you can read this article: http://ask-leo.com/where_does_outlook_express_put_my_mail_folders.html
If it was outlook express (windows xp) then the *.dbx might be in: C:\Documents and Settings\Your User Name\local settings\AppData\Microsoft\identities\outlook express (something like this, I have not done a backup with express in a while but the folder that contains the info should be identities, that folder may be in roaming\appdata).
If it was windows Vista or 7 then it might be: C:\Users\your user name\AppData\Local\Microsoft\Windows Mail...
Your contacts will be a *.wab file. ---> http://support.postbox-inc.com/hc/en-us/articles/202199840-Import-Outlook-Express-Windows-Address-Book-wab-files-
Edited by zingo156, 15 August 2014 - 09:37 AM.