title: Feature to allow for automatic uninstallation of application upon updating app
body: <p>I am creating a Windows application (x32) using ISLE (InstallShield Limited Edition).</p>
  
  <p>Often when I provide a new version of my application, the user has to manually go to "Uninstall a program" in order to remove previous version of application before he can perform a reinstallation.</p>
  
  <p>How can I remove this requirement.. by say automatically uninstalling existing versions in case they exist when the user launches a fresh installation.</p>