The recovery CD that Nero BackItUp makes is based on Linux. It is not a boot CD like you would want for Windows. It will allow you to restore the hard drive (the Windows installation) in case you need to do that, if you have the correct backup.
There are several sites that show you how to make a boot CD for Windows, and you will probably download an image file and burn it to CD using NeroBurning ROM under the Recorder-Burn Image option. Just Google for "Windows Boot CD"