I've got a 128 MB Sony Memory Stick that has somehow gotten something corrupted on it. I'd give more details, but I can't, really - a guy here took it out in one of our cameras and when it came back it didn't work. He (of course) didn't do anything wrong, it just happened. I put the card in a card reader and the only file on it has some garbage filename. I've tried to format the card or delete the file on it, but Windows won't let me. Are there any utilities out there that would help me get rid of this, or are we stuck buying a new one?