Alcohol 120% and Deamon Tools...Help!

I tried using Alcohol 120% to make an image of WC3 and mounting it on 1 of the drives. I click the WC3 icon but it still ask me for the WC3 CD. I had it working before to where i didnt need the CD but after i formated it keeps asking me for the CD now. How do i fix this? I tried using Deamon tools too. It still asks me for the CD.