The question has been closed for the following reason "Question has an accepted answer and is now being used to leave spam advertising links." by Simon H Apr 12 '13 at 05:17
Microsoft Office has a built in repair tool called Scanpst. Try this first, its free and wont cause any problems.
Here is the link to the microsoft website where you can watch a video on how to repair your .pst file with Scanpst http://support.microsoft.com/kb/287497
answered Jan 24 '13 at 06:30