I have been tryin to figure out how to back up some of my back ups because i am changing formats, using nero i try to copy disk, but do i put the back up in the cd writer, and the blank in the dvd writer because it does not have a read selection. only a source and destination drive. what is my source and what is my destination. i know its a newbie q, but i use xcopy and decrypter to back up originals. so unfamiliar with nero.