In addition to OfficeRecovery.com's FreeUndelete, (which I just found through this site), I've used Restoration 2.5.14 by Brian Kato, link here. This program is also found on MajorGeeks.com and Softpedia.com. It appears to run on just three files + a Readme.txt file, and as its primary function is recovering deleted files, it recommends running from a separate drive than the one you are trying to recover files from. Therefore, I don't think it would change anything on the hard disk. Anyone else want a look?