Ahh, but now that you've found the card, you can get another one to have more capacity.
Try sending a few without doing anything to them. I;ve sent them online to the PhotoLab, but found it just as easy to go there directly, put the card in the machine and print from there. Yes, it means going back to pick them up, but you don't need to worry about the cyberspace gremlins chewing up the files in transit.
If you have a CD burner, copy the files as is to a CD and bring that in if you want to print lots, or if there is red eye or something you want to remove first.