I used Windows Server 2003 and Exchange Server 2003 and I'm quite new to Exchange. I regularly backup AD and Microsoft Information Store from Windows backup utility (The file name for AD is "active.bkf" and MS information Store is "infostore,bkf") Last night the harddisk got corrupted from bad sector. Since there are a few users, I would like to restore the backup "infostore.bkf" into *.PST file of each users. Is it possible to do that? If it is, please guide me step by step. Another thing is could we retrieve this "infostore.bkf" to *.PST file for each users on differet hardware?