At work one of the other employees took some pictures of a surgical patient for our records. We use a card reader to add the photos into our program. The card reader wouldn't read the pictures and when we put the card back in the camera it just showed question marks instead of the photos. That same card would show new pictures I took from the came camera, a Cannon. I tried using a different card reader and connected the camera to my computer by USB with the card in the camera. I did get the thumbnails onto my desktop. They won't open with windows picture viewer. They wouldn't open with windows paint, Lexmark's photo editing software, or paint.net. I tried to upload them to Flickr and photobucket and both said error corrupted file. Any ideas for recovering these corrupted files. I'd even settle viewing them and doing screenshots. We didn't find the problem until the next day retaking the pictures wasn't an option. Not to mention you can't before and during pictures after you've sewn some one up. Any thoughts would be appreciated.