installer custom action to Visual 2008
I would like to know how to add a custom action to an installer of my program .. the action I need is this:
A custom action (option) where the user is asked whether to keep old versions on your computer or not .... about the system installed and if ah says that if you create another installation folder besides the existing ones and if he says that not only eliminates and creates a new folder .. all this during the installation.
I was watching these videos
please i need your help to solve ... thanks