I have a beige G3 with:

233mhz G3

128MB RAM

Voodoo 2 12MB

80GB HD

craptacular IDE CD drive

two USB cards

8MB VRAM

The thing has given me so many errors I can't believe it even runs.

Error -3, -199, crashes on booting a 9.2.2 CD, gives errors about various extensions upon trying to boot the CD, disk utility crashes.

I don't know what to do, I have never seen a computer behave this way. I tried lots of different RAM, so I don't think it's a RAM issue.