Sounds like your OS installation is basically shot, and needs to be reinstalled.
Call Apple, they can probably send you some replacement CDs for the ones you lost.
Please Help. My Mac Powerbook 1400 won't start up. I just keep getting an error message that says:
The finder could not start because the following libraries could not be found: AppearanceLib
Then it tells me to use the disks that came with the computer and I don't have them! I've tried different downloads on a floppy but I still get the same thing. Please Help Me.