title: InstallShield Run setup and install prerequisites without asking
body: <p>I have a WinForm Application done in Visual Studio 2012, Framework 4.5. I made the Setup Project with InstallShield. I need to install this App on PC that may not have Framework 4.5 installed, so I add Framework 4.5 as a PreRequisite. So far So good. 
  What I want is to Install the PreRequisite automatically, without asking my clients when they Runs the Setup. 
  Is that Possible?
  Thanks </p>