title: How to detect if a specific version of vcredist_x86.exe has already been installed?
body: <p>I created an installer that run vcredist_x86.exe (version 9.0.x.x) as part of the installation. Before installing it however I would like to know if it's already in the user's system. I basically need to detect not only that the DLLs are present but that they have the right version number. Is there any reliable way to do that?</p>
  
  <p>I'm using NSIS but any solution would be welcome.</p>