I have met the same problem some days before. I found a good tool
called Advanced Outlook Repair. You can download a free demo version
at
http://www.datanumen.com/aor/aor.exe . I think it is a useful
repair tool for you. It is easy to recover your PST file by using its
wizard. It is a powerful tool to recover messages, folders and other
objects from corrupt or damaged Microsoft Outlook PST files.
Detailed information about Advanced Outlook Repair can be found at
http://www.datanumen.com/aor/
Wangdong