How do I create a bootable CD with NERO 9?

This is maddening!!!

I need to create a bootable CD and also ad the new BIOS .rom and flash files to it for my computer. I have made 6 bootable CD in a row now but cannot find a way to ad the extra files I need. The CD shows the files are indeed there when viewing in Explorer however, when I boot to the CD only the boot files are presently.

How does one create a bootable CD and add extra files using NERO 9?