I know this is some sort of database, but I can't for the life of me figure out what type it is. It may be proprietary. If that's the case, please let me know if you think there is a way to write a program to read and modify it.
I've zipped up the file on my website and you can download it via the link at the bottom of this message. If I open it up in notepad, it begins (in ascii):