No problem mate and the windows backup features have some options, with it we can either have only the system image only or the entire primary partition, otherwise it's of really no use except save windows when it farts for some apparent reason.
Like say i have this folder for Milkshape 3D program, if my complete C partition goes away for some reason then instead of re-installing entire OS and then installing this program again manually, I will simply use the system backup i made on my external hard drive. Like on current version, it shows the previous version being kept which will be transferred when i use this backup, for eg:
With its registry entries, program preferences and uninstall icon in control panel etc etc.
Anyways like i previously said, the other options via external programs is more convenient for advanced users since it takes the entire HDD in one go.