How to create an autorun file for my Software CD?

Hi,guys if you want that when you insert any software CD in your 
cd drive than the setup of the software should start automatically.
For this you have to create an autorun file for the cd.Steps are 
given below to do this.

Instructions:
1.First of all open notepad and write:
    [autorun]
    OPEN=Setup_filename.EXE
    ICON=Setup_filename.EXE
2.But remember to replace "Setup_filename.EXE" with the name 
    of setup file of the software.
3.Now save the file with the name "autorun.inf".
4.Burn your software cd with the autorun file.
5.Now when you insert the cd the setup will automatically start.If
    the setup does not start than goto My Computer and double click on 
    the cd.