http://www.antionline.com/showthread...hreadid=251428

Towards the bottom of the tutorial is a section on tools for data recovery.

Another interesting method: http://www.antionline.com/showthread...hreadid=247295

You could use a hex editor, but I think that would be doing it the hard way. There are applications that look for data with no header information, and shows you where to look.

Do a search for Data Recovery Tutorials if this isn't enough.