Thanks everybody for your comments... I tried a test account saving it as a pst file in Outlook and using Exchange Administrator, import directory feature to import that file to a user account. But it gives an error message saying that "The import file is not valid. The first column header must be obj-Class.The first column header found was !BDN........ Confirm that the column delimiter ';' is correct for the file." Any idea....? (Extra question:cant we use Outlook Express(instead of MS Outlook) to save downloaded mails as a pst file..)