Since we are all talking Java here, wouldn't these files, if substituted for those originally installed, work on any OS? I suppose I could just try it out, and if it explodes....

I use Mac OS 9.2 and will continue to do so rather than pay over 100€ for a bunch of souped-up Claris crap designed for people who don't know what a DayTimer is and want to spend the rest of their lives entering trivial data.