I am trying to play a cd-rip of DefCon 5 I found on Home of the Underdogs. I've tried a few ways to mount the cd image file I made using nero (nrg and iso formats) and both result in the same error that the game could not locate my cd. Is there a specific set of switches that would help me here in this situation to allow the cd image to be viewed as a real cd?

I am using version 0.73.