I agree with idkew. However, in a world with many pc's with floppy drives it is sometimes necessary to share info.
maclamb, test the disks when the drive is attached to another mac to start with. If that works, try looking for updated drivers for the floppy drive? Or, somehow transfer the files to another media + insert that media into the TiBook.
Sorry, I know that was no much help. Someone else I am sure has a propper answer for you.