So this quest kind of died out this winter. I haven't really found too much more info, but I have an update. My 2400c lives again! My Mac OS 9 installation (or something :?: ) was screwed up, and the machine would boot to the desktop but fall asleep before the Finder would load. And wake up and fall right back asleep. I just plugged it in yesterday, and it works! Now, I just need to figure out how to connect my AppleCD 300e to the Powerbook... so far, it isn't booting with it connected.