Hi,
In order to create a bootable package you need to launch Ghost Boot Wizard from a console.
There you have few options that you can choose from but I'll explain only the bootable CD/DVD since this is the relevant one for you.
Choose CD/DVD startup Boot package with ghost and follow the wizard, select the target for the boot package "ISO image" don't forget to check "Support for creating bootable CD/DVD...", name the image and save it.
This will create bootable ISO that you need to create your CD/DVD from.
Use this CD/DVD to boot your machine....
Hope this was helpful.
Cheers,
Orah