My lost life panic - Office Outlook 2003

Hello,
Whilst not in an entirely logical state of mind I thought it sensible to return my Microsoft Outlook Office 2003 to factory settings .
That was not a good idea as I find I have lost my history- notes, emails, contacts etc
Is there a way anyone can think of to retrieve the data that was originally in Outlook. All I have now is a desert.

Thanks

J