It's not a bad idea, to back up one's work (of several weeks/months/years)
before experimenting , isn't it...
However you might have some luck.
The method you've followed depends on what kind of mail service you've used:
- for POP3 accounts do a search for "*.pst" Once it returns any files
(greater than let's say 265 KB) then add it to your Outlook profile as
Personal Folders, and then you're set
- if you've used HTTP, IMAP or Exchange Server, then look up the server
settings and that's it, because the mails are stored rather on the server
and only synchronized with your Outlook.
- also: if you've had your data in personal folders (.pst files), then use
the first method
Hope this helps.