How do you play fable and AOEIII with no CD? please help me !

[chicksboy55555]

# Fixed EXE: This removes the copy protection but not the CD/DVD-check. You will still need a backup CD/DVD to play the game, but this backup may be created with any CD/DVD burner software (including but not limited to the popular Nero Burning ROM), not only special ones aimed at duplicating copy protected CD's/DVD's.
# No-CD/DVD patch: This removes the copy protection as well as the CD/DVD-check. If you did a full install of the game (no necessary game files have been left on the CD/DVD), you will be able to play the game from the hard disk only, without the need to insert any CD/DVD, be it an original or a backup.

Please i dont get that. what is a backup cd? someone rephrase it for me please