Install Daemon Tools and reboot. After reboot a small icon should be appear in the TrayBar as it showed on the picture.
Okay, click on this icon with left mouse's button and there will appear a popup window with available VIRTUAL drives. Refer to the picture, it is available empty virtual drive I:
Select any drive you want (it could be not empty) and there will appear a file selection dialog asking you to provide a image file (for example cd.cue) to use it and emulate a CDROM. Browse and select CD.CUE file like it showed on the image and click 'Open'.
Now the image is connected to virtual drive and you can explore a disk like it is loaded into cdrom.