What does the Autorun file do on a software DVD?
The autorun file tells Windows to take certain actions
automatically when the DVD is inserted. For example, if the DVD
includes an installer or setup program, a very common thing for the
autorun file to do is tell Windows to run that program, rather than
make the user have to go in and run it himself. Autorun is becoming
less common and will probably eventually be eliminated altogether
though, since it's a big security risk.