While trying to installed Snow Leopard on my MacBook - I can't seem to eject the disk. From the OS X Installer screen I have no option to eject and any of the eject commands or eject key will not work. I have also opened the Disk Utilities window - Clicked on the disk and the 'eject' option isn't available. (It is however available when I select the actual drive, but obviously cannot eject that). Any help would be appreciated.