If you are doing Iowa research, you should visit IAGenWeb -- a prime source for Iowa genealogy records, family history, ancestor obituaries, other Iowa historical records.
The Default path for All Microsoft Office Outlook .pst file location is the User data(Your account name)/Local Settings/Application Data/Microsoft/Outlook/ this is where the .pst files are stored by default!!! this goes for All Windows OS! Tuesday, June 05, 2012 12:18 PM.
On the Data Files tab, click the Outlook Data File (.pst) file, and then click Settings. In the Name box, enter a descriptive name for the Outlook Data File (.pst). Note Changing the display name does not rename the file.