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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 File menu, point to Open, and then click Outlook Data File. Click the .pst file that you want to open, and then click OK. Note: The name of the folder that is associated with the data file appears in the Folder List. To view the Folder List, on the Go menu, click Folder List.