Thank you Angus!! This is really helpful information! I have one more question though... Is it possible to install the program on the same drive where the lost data are? I do not have an external HD or the CD where the rescue program is (I will purchase Norton Utilities online and then download the software so I can use it right away.... Norton is the best choice for me so far).... Gary On Monday, May 31, 2004, at 02:00 AM, Angus Wallace wrote: > It shouldn't matter, about the time of installation (i.e. if you > delete the files before you install the program) > > Think of a hard disk as a series of pages on which you can write > information. you have a special section where you make a note of where > you've stored information (think of this as a Table of Contents in a > book). Any page that isn't indexed in the table of contents can be > written over. > > When you delete a file, all you do is remove its listing from the > table of contents - its actual data remains in place. However, it's > only a matter of time until your system looks at the contents, sees > that the space is vacant, and overwrites the data. > > The type of programs we're talking about look for data on the hard > disk, and ignore the table of contents. In this way, they can > sometimes recover data that have been 'deleted'. > > I hope this is clear, and helpful, > Cheers, > -Angus