How to boot from CD

It's a simple question, but I'm having a difficult time figure out how to boot from CD on a Dell Poweredge 2300/450. I've been through the initial Bios, and there are options to boot from the floppy or the hard drive, but nothing for the CD-ROM.

The CD-ROM is on the SCSI at location 5. How do I get it to boot from the CD-ROM?

Thanks in advance for any help,

Charlie Peppler

PS. I'm trying to install Fedora.