Using OS X 10.3 I like to make copies of CD's on my computer that I can mount as though the CD was in the drive. For example, Warcraft 3 requires the game CD to be inserted into the drive before you can launch the application. What i have done is create an image of this CD so instead of inserting the CD all I need to do is mount the image. This also works with the WorldBook encyclopedia CD that came with the computer. The trouble is, this only seems to work with some CDs. Is there a fail-free way to do this with all CDs? I want to fool the computer into thinking, for example that the starcraft CD is really in the drive when it is not.