title: How to change filetype association in the registry?
body: <p>first time posting in StackOverflow. :D
  I need my software to add a couple of things in the registry. </p>
  
  <p>My program will use </p>
  
  <blockquote>
    <p><code>Process.Start(@"blblabla.smc");</code></p>
  </blockquote>
  
  <p>to launch a file, but the problem is that most likely the user will not have a program set as default application for the particular file extension.</p>
  
  <p><strong>How can I add file associations to the WindowsRegistry?</strong></p>