Taking your post at face value, you are not supposed to "put the file" on CD, you are supposed to burn a CD with the image contained in the file. It is not exactly the same thing.

To avoid doubt, strictly follow instructions from ccfj1 in this post (just read CD where it says DVD):
http://www.xoutpost.com/navigation-system/32266-2007-2-how-do-i-burn-disc.html

You should wait for more than 2 minutes. When working, 2 minutes are hardly enough for the process to complete. When not sure it is actually working, ten minutes is the minimum before giving up.