As good as those tutorials are, I will answer your question directly, leelord.
If you ONLY want an image of your entire drive, you should pick Option 2: Let me choose, then uncheck ALL the boxes in the top pane leaving only the "Include a system image of drives: (C:), (D:)" box at the bottom checked. Note: you can only image the entire drive. The backup built into Windows 7 does not let you pick individual partitions (which is actually what C and D are, most likely).
The following screenshot should illustrate what I mean:
The data backup backs up the files themselves in an archive-esque sort of way (lots of cryptic-looking folders, sorted by date usually).
The system image is different: you get a large .vhd (virtual hard drive) file that is an complete image of that partition (note each partition is imaged into its own .vhd file).
You can even mount the .vhd file(s) if you want and browse the contents of your drive(s) that existed at the time of the backup.
Does that answer your question?