problem with .mds mounting autorun

whenever i mount a .mds image with daemon instead of AUTORUN starting the games launcher i have a windows explorer window open displaying the contents of the image. When i click on a setup.exe or autorun.exe type file a small dos/cmd window appears for half a second then nothing at all happens. This may be easily fixed but i cant for the life of me understand why. I would really appreciate any help on this issue as it prevents my from using close to every image i have.