Assuming these images are not downloaded .... and the instructions are a guide to backing up programs you have purchased legally......
If you have created a clone CD image, and cannot burn it, it may very well be because the copy protection structure of the disc cannot be recreated by your burner.
I will suggest that you can download Daemon Tools & mount the image as required from a CDR or DVDR & also turn on all the emulation options.
Just write the image using nero as an ISO cd/dvd and drag & drop the image. (Wouldn't hurt to have a copy of the latest version of Daemon tools on the disc also)