There is a piece of software called "Don't Panic! Image Recall 3"
see the website http://www.imagerecall.com/
What might have happened is that the regestry might have been re-set, and
the computer no longer can reference the location of those pictures on your
hard drive. Unless the sectors of the disc where the pictures are stored
have actually been overwritten with new data, this software should be able
to recover recover them. Remember, deleting a file on the computer disc
only means deleting the reference to that file in the discs table of
contents so the computer considers that disc space to be free and available
to be overwritten. The actual data remains until it is actually
overwritten.
I hope this helps


KMW