MSI Installer/Site key-license

Furthermore, I strongly suggest that you consult the following URL:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/windows_installer_start_page.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/an_installation_example.asp

As a company that tries to distribute as quietly as possible (SMS) on
different kinds of environment (Thin client, ...) and for many users (as
many as 30 and possibly many more in the future) applications, we would
like two industrial features:
- quiet installers (.msi, Install Shield, ...)
- site licensing (not depending on Internet registration: as we would like
to register our users ourselves and silently).

This is very important to us and will drive our decision to widely
distribute (hence buy) your software.