The Uninstall dialog allows you to set all of your uninstall options. It has three tabs:
The Settings tab is used to set general configuration options for the uninstall program.
The Before Uninstalling tab is where you can add any actions that you want performed before any files are uninstalled.
The After Uninstalling tab is where you can add any actions that you want performed after all of the files are uninstalled.
See Also: How the Uninstall Works