Software Deployment

hi there,

I am working on msi package and not sure what would be the best way to drop the files in certain directory before the execution of the script. To be more precise when clickin on .msi the script should check for let say c:\whatever\files then either install them or verify that they are installed and then execute the rest of the script. In my case the script will execute files from the copied files so if they are not there i am getting errors.

Please advise.

Thanks