I  still  have  a  lot  of old CDs containing various backups. Oh, the
 irony: I can read the CDs  without  difficulty,  even  though  they're
 about 15 years old CD-Rs. But back then, I didn't care much about file
 formats.  Hence, it's some proprietary stuff. I don't have the Windows
 software  around  anymore  to  actually  use  those  files. Worse, the
 company in question  got  bought  by  Norton  who,  in  turn,  stopped
 developing that program.

 Sucks.

 What now? Reverse-engineer the file format?