Please help. problem w/ daemon and alcohol

i used daemon on my old computer, i jsut put it on my new one and i was able to mount a couple images and i installed two games, afterwards when i tried to start it, it would ask me for the cd which i had mounted. if i try to give the image a drive letter, it just doesn’t do anything, so i can’t see it in my comptuer either. i have the same problem w/ both daemon and alcohol and i have been trying like 6 different images which worked in the past so i know that’s not the problem either. any help would be greatly greatly appreciated.