Find/borrow a notebook with FW. Put your machine in Target Disk mode and try installing to it from the other notebook.
Or get a FW CD rom, boot from it and install from there.
Or you can try resetting PRAM, CUDA switches, PowerManager, hardware test (maybe CD-rom is faulty?), Open firmware reset, etc. Do some searches.
Also, try another boot CD. Sometimes copies made at high speeds (over 4X) do not read in older CD-ROMs.