Yesterday worker carried a user account from the server Exchange. Admin decided to improve it and made ??another. Also updated the office. Office 2007 was removed and installed in 2010. Now when you run Outlook there is a window with a proposal to go to the new mail or select the previous data. Go to the new mail. Everything works. How to complain about nothing. BUT there are no old letters. And they want! Login using the old data can not. Produces an error. Although the user says that yesterday went freely, but only offline. The documents user has two file archive.pst and outlook.ost. Something tells me that they have to do something, but I do not know that. Tried to open archive.pst. It opened, but found nothing.How to open pst file without outlook? How to do it without access to the old data?