How to create .iso image file? PLEASE HELP

I have bought Norton Ghost 15.0 and I am trying to create a bootable disc of a backup. But I cannot figure out for anything how to create the .iso image to burn. I have created a backup which created the "Symantec Image File." I have been wrestling with this for days trying to figure out how to get this to burn to a disc. I cannot find anywhere in the software to create the ".iso" file. I have a third part image burner (Daemon Tools). I really need to get this back up imaged quickly. Can someone help me out and point me in the right direction? 

 

I have read the documentation in the manual but the steps in it do not match up with what I am seeing and can't move on.

 

PLEASE HELP!