I have a machine in front of me, it is running MS DOS v6.22, when you try to boot up it brings up a corrupted screen, basically the screen is that of the MS DOS Startup menu but seriously corrupted, I suspect a virus somewhere but can't find one. I have gone into the DOS directory and have found that something has replaced the A's and B's in the filenames with smiley face's, a white face and a black face. Does anyone know the ASCII codes for these??