How to Move your Outlook PST Data File to a New Location
1. To move the location of your pst file/s, Outlook needs to be closed. 2. Locate your pst file.The defaults locations are:
Outlook 2007
C:\Users\%username%\AppData\Local\Microsoft\Outlook
Outlook 2010
"Outlook Files in your "Documents" folder.
3. Cut and paste the pst to it's new location. 4. Restart Outlook. 5. You will be asked for the location of the pst-file. Simply browse to the new location. 
Note
ensure you select the same pst-file or you’ll corrupt your mail profile
overwriting a pst could lead to file corruption
storing a pst file on a mapped network drive is not advisable and is unsupported by Microsoft
An excellent tool for sharing a pst between computers is Easy2Sync. 
Outlook PST Data File - Move 
