its been a couple years since i messed with isos. now i dont remember how to convert them to .mpg im sure theres info on the forums but a search brought up zip for .iso i thought i used vcdgear but that was for bin/cues.
Use WinISO to see what is inside the archive (iso file). You can extract the files with this program.
If you see a video file, then you're good to go. Just extract it. If you see a few folders with funny names, you're probably looking at a dvd or vcd iso. Use Nero to burn it to disk. Open the file with Nero, don't just burn the iso as a file.
The invisible man is blind. If light passes through a body without being affected, then it cannot be properly refracted by the lenses. It won't be focused and he will constantly see a blur of random colors as lights hit the rods and cones from each direction.