I have painted myself into a corner. I thought I would try out Ubuntu on my 27 inch iMac. I inserted the Ubuntu boot CD, then changed the settings so that it would boot from the CD/DVD. Once it reboots, I cant do anything. Ubuntu boots up, but my wireless mouse and keyboard does not work. How can I now either eject the CD/DVD or change the boot order so that I can reboot back into OSX? Thanks in advance.