title: How would I go about licensing a WPF windows application
body: <p>I have developed a small application that I would like to try and sell but I am unfamiliar with how best to go about this.  </p>
  
  <ol>
  <li><p>How would I go about locking the program down for trial use1.</p></li>
  <li><p>How would I go about dealing with accepting payments?</p></li>
  </ol>
  
  <p>Bearing in mind that I am a one man band with not a lot of money, I was hoping for a solution that would be free or a low cost, effective, secure and simple to implement and maintain.  This is not something that I have a lot of experience with as I have typically developed for the public sector where they buy a solution as a whole and we have never licensed it.</p>
  
  <p>Any help would really be appreciated.
  Thanks,</p>
  
  <p>B</p>