I am trying to access Illustrator 5 and 6 files that I created 1996-1997. I have tried opening them as well as placing them in CS 2, 3, 4, and 5 to no avail. I get a message that "the file is in an unknown format and cannot be opened" in Illustrator and Photoshop. In InDesign, I get "Cannot place this file. No filter found for requested operation." No luck with Acrobat or Distiller, either. I have tried changing extensions from .eps to .ai and vice-versa. No luck. Can't open them in Preview, Graphic Converter, or Inkscape, either. Does anyone know of a way to get these ancient postscript files into Creative Suite? Perhaps a plug-in or third-party software? Anything? I am on Mac OS 10.6.5. Thanks.