MS Office file Corrupted.

[kali]

I use XP Professional (SP2) and MS Office 2002. My Windows was going well.

Yesterday I tried to open one of my MS Word files. It shows corrupted massage. Then I tried all of my MS Office files (.doc, .xls, .ppt) of all drives to open. But no one opened. My all another files are OK. But only doc, xls, ppt are corrupted.

I tried Open and Repair option, new Windows, and MS office 2003. I also tried to open the file in another PC. I also renamed the file in .html, .xml. But same result. I have many important files (ANSI, Unicode) in my PC that are now corrupted. What can I do?