As long as we're on the subject...

>There is a compressed archive of both interpreters, the image, and changes
>files.

There doesn't seem to be a standalone binary of the Jitter. I'd try 
building one, but I don't have CodeWarrior (too expensive) or MPW (huge 
download).

I've seen mention of a web browser plug-in that either is a Squeak 
interpreter or passes code to the interpreter. That sounds very exciting 
and I'd love to see it work.