Hi DiSnapper.
It was actually me who recommended PC Inspector, I have used it, I don't recommend things I have no experience with!

I was messing around experimenting with my 7D changing settings, took out the card with the days images on, put in blank card, snapping pics of cats or the wall or something completely irrelevant, finished messing format the card, take it out, put the current, "in use" card back in, check the images, no images?? I'd formatted the wrong card. Actually I'd managed to format both somehow, still not worked that one out!
It was at this point I discovered I was obviously not the first to do this as there was software out there to undo my stupidity! It was PC Inspector that saved my pics for me.
Cheers Graham.
DiSnapper said:
As far as my experience goes, even after formatting the card may work or may not. So its better to rescue the files before formatting the card. I used "EaseUS" its not freeware but the freeware will allow you to find out if the data can be recovered. Recuva, Image Rescue by Lexar can also do the job.
I cannot comment on PCInspector as suggested by Maxmillian as I have not used it.