sinclair_tm

Push the power button and then hold down command-option-O-F at the same time. This should send you into the firmware, you'll get a gray screen with small text and a prompt. Type eject cd and it should open the drive. Put the CD in and close the drive, then type mac-boot and it should now boot from the CD. If not, well at least it's in the drive and you can now hold the option key after you hold the power button to get the boot menu and choose the CD from it.