Did you have Alcohol installed on pc?
Did you "rename" your drivers during the "expert" install of Alcohol?
Did you install Alcohol not using the 'expert" install?
In "Device Manager" (right click My Computer, properties, click on Hardware tab, click on Device Manager) do you have listings under "SCSI and RAID Controllers"? If so what are they?
The "port number may vary", click (open) untill you locate the drive your game/image is on. Then make the deny changes in registry. If you have 4 scsi ports, would they be (2) dvd/cd drives and (2) virtual drives?
The "deny read" changes have to be on the drive your game or image is on.
Make these changes mentioned above and DO NOT REBOOT. Launch the game. If you reboot, then launch the game, the changes you made in registry will go back to before
Maybe I can help you if you answer these questions...................