0 Fixing PST File With Outlook’s Repair Tool.

Tool is named : ScanPst.exe

For Outlook 2003: X:\Program Files\Common Files\System\MSMAPI\LocaleID

For Outlook 2007:  X:\Program Files\Microsoft Office\OFFICE12

Outlook 2010 x64bit : X:\Program Files\Microsoft Office\Office14

Outlook 2010 x32bit : X:\Program Files\Microsoft Office(x86)\Office14

More info : Microsoft