title: Add registration dialog to PackageMaker
body: <p>I'm currently in the process of writing a Mac PackageMaker-based installer for an application that I had previously distributed for Windows using an NSIS installer.</p>
  
  <p>In NSIS, I was able to create a customized dialog that allowed the user to enter their serial number and license key before being allowed to install the program.</p>
  
  <p>In PackageMaker, I can't really see anyway to add a custom dialog short of writing an little GUI app that is called by PackageMaker as a requirement.  If this is the only way to do what I want, can anyone direct me to a resource that would explain how to do that?</p>
  
  <p>If there is a another way, I'd also love to hear about that too.</p>
  
  <p>(I know <a href="https://stackoverflow.com/questions/1555602/packagemaker-custom-ui-dialog">this question is similar</a> but seems to deal more with editing the existing PackageMaker screens.)</p>