Wow this takes me back. I've used a Mac since 1988-ish (System 6.0.3 is the first I remember). Post an image of the root of the volume w/ all the folder icons if you can, because to be honest, I have not fired up my PowerBook 1400c in a very, very long time (currently using Mac Pro w/ 10.5.3 and WinXP).
At the root of the volume, there are a few folders that have icons superimposed on them... those are the OS-installed directories. I know System Folder and Applications are 2 of them. And if I'm not mistaken, I think it should have 9.2.1 unless you're using OS X (9.2.2 was the final OS 9 update, but it was only for "Classic" mode in OS X and won't install on non- OS X capable machines). BUT it might install as the "regular OS" as long as the machine is OS X capable, and I'm pretty sure the PB G3 is, as long as it's not the bronze keyboard model...? (The first PB G3). But I am not sure from your description and I went straight from PB1400 to PowerMac G4 (AGP graphics).
Heck, I still have the OS 9 (or maybe 9.1) install disc... mail me at
crypto.7@gmail.com and I'll make an .iso or .dmg for you and put it somewhere for you to download. Then once installed you can update it w/ Software Update. Probably easier that way
Now I need help

Does anyone know if you can flash an *APPLE OEM* ATI X1900 with a Windows ROM? I mean, offhand... or point me to the approp. forum. I have not been in here long enough to know where to even post the question, but what's weird is the ROM is reported as revision 113-A52027-202 (by Mac OS X), but WinXP and Vista report it as 113-A52027-107. WTF? I want to flash the ROM so it works in... well, ANY version of Windows, to play CoD4. Because I'm an addict. Thx in advance.