Typically, if Ghost is run from a Boot Disk, Ghost will put itself and all the boot information from the boot disk on the CD/DVD ONLY if the original boot up was done from a floppy disk. That's the way Ghost 2003 was written, way back in the days when it was assumed that every PC had a floppy disk drive on it. (and most DID! )
I too, have the ability to use Ghost 2003 from a boot CD and even a boot Flash Drive, but Ghost will NOT offer to make the resulting DVD bootable.
To use the Ghost image on the DVD, I must once again boot up with the original boot disk. That's not my favorite method to use Ghost.
I only boot from CD or Flash Drive if I'm going to make a Quickie backup to another hard drive.
An easy way to get around that today, on computers with NO floppy drive, is to use a "USB Floppy Drive".
If I'm going to make a Ghost Image to DVD, I will absolutely boot up my system with my Ghost 2003 boot floppy.
I won't build a computer without at least one Floppy Disk Drive installed.
Most new systems today, will accept the USB Floppy Drive as if it were an internally connected drive.
Since that drive comes up as drive "A:", Ghost is happy with that and will accept that as the source of the boot files to put on the DVD.
Unless your OS is, "Stripped To The Bone" I'd not advise using CD's to receive the Ghost Image. For the typical HD it would take a STACK of CD's to hold a Ghost Image, even using HIGH compression.
If you can't use DVD's then an external HD would be the next best choice.
Good Luck,
The Shadow