By default, when you double-click on an MSI file it prompts you to click Next until you finish installing the application. You can run the MSI unattended from the command line using the /QN switch but that requires typing. What if you need/want to be able to double-click on the MSI file and have it run the MSI unattended? Here's how:
-Go to the Setup Editor view:
-Click the Dialogs tab and un-select the following:
-Install Dialogs -> Welcome Dialog Wizard
-Install Dialogs -> Exit Dialog
-Maintenance Dialogs -> Exit Dialog