title: NSIS - rebuilding the installer exe file
body: <p>Suppose I have created an installation exe using NSIS. The exe is a compressed (7zip maybe) file that contains everything to install the application on a fresh machine, and that comprises big exe files (like .NET runtimes, mysql server installer, etc.). I have to send via the Internet the big exe file to another person. </p>
  
  <p>To save time and bandwidth, I'd like to remove the contained big files; I can do that using 7zip to open and extract all the files in the original exe, delete the big ones, rezip using again 7zip. This works up now.</p>
  
  <p>The other party will download the reduced zipped file, but then has to reintroduce the big files in some way, recreating the exe installer. </p>
  
  <p>I don't know how to achieve that. I've tried with paquet builder with no success. 
  Is that possible? </p>