It should work very well with a memory card reader (or if the OP's
camera "gets a drive letter of it's own" - unlike my Canon A60)

With a card reader even Jpegdump by Kurt Stege -
http://www.goto.onlinehome.de/dsc/jpegdump.htm - should work very
well if you can figure out what/how to write in the Command Line
(it's just 2 lines).  I rescued over 100 pictures with this program
(half of them very small thumbnails, though) from a co-workers
seemingly "blank" card when he had done something to it he shouldn't
have or pushed a button too many.

The utility from PCInspector might be better if you have fragmented
pictures, i.e. pictures stored in more than one place
(non-contiguously) - resulting from deleting pictures out of order
and making the free space on the card more than one place, as they
will appear to be broken/unsalvageable with Jpegdump.

Both programs will not write to the card, only read an image of the
memory card -  thus preserving the card for another (picture) file
recovery tool if it should not work for your card.

And from my experience theese words are worth remebering:

"What to do before loosing the images

You can rise the chances of recovering deleted images in an accident
by using a simple stratgy. And jpegdump cannot recover fragmented
jpeg files. So try not to fragment the file system on your memory
card. You can do this best, when you delete all files on the memory
card after transmitting them to the PC. Don't delete any single
files on the memory card. If you want to delete a single image after
taking the photo, do it immediately. The last stored picture may be
deleted without much risk of fragmentation. Deleting any other image
will result in a fragmentation of the free memory in the card, so
don't do that, if you want to be prepared for the case of an
accident."

i.e. format the card before each seperate trip/use/session and do
not delete any other picture than the last one captured.