Launch the application after completion of Installation

Hi,

I am working with a setup project in VS 2003 .
I would like to launch my application when the installation is complete.
Actually,I was trying to invoke an Event when the user clicks the "CLOSE" button on the Finished Screen.

I have tried calling my application exe in the Install and Commit custom actions.

This resulted in launching the application even before the installation completes.I would like to launch the application once the user clicks the CLOSE button on the final finish screen.
I was not able to figure out how to customize the dialogs .
Also,I was not able to view the UI dialogs during design time.
Is it possible to view the UI dialogs in design time?



Please provide your ideas.