Apple Mac Pro Tower — can’t remove CD in optical drive

When trying to see if VMware’s Hypervisor would work with my Mac Pro, I installed the CD and rebooted.
Alas, when booting from the VMware Hypervisor CD, it does not install.
Unfortunately, I can’t get the CD to eject.
How do I change the boot order so that my Mac Pro will not try to install/run from the optical drive? How do I get the CD out of the optical drive?
(With Wintel systems / most optical drives I could use a paper clip and manully open the optical drive tray. I don’t see such a option with the Apple Mac Pro optical drive.)

🙁