title: What is the interop dll?
body: <p>I need some clarification. I have a Reportwriter dll that uses Crystal Reports. It is written in VB6. I have to add this dll to my asp.net project, where it creates an interop dll.</p>
  
  <p>To my understanding, the interop dll is there as an intermediary so that my .net code can speak to the Reportwriter dll.</p>
  
  <p>So do I register the interop dll or do I register the original dll?</p>