Originally discussed here - install links... for FAQ

Unattended/Silent Installation Switches for Windows Apps
This covers:
  • MSI packages (*.MSI)
  • InstallShield
  • PackagefortheWeb (PTFTW - From InstallShield)
  • Wise InstallMaster (or just simply WISE)
  • Inno Setup
  • Nullsoft Scriptable Install System
  • Microsoft hotfixes and older packages (i.e. Qnnnnn.EXE)

Other ways to approach the installer are discussed here too.
Superior RIS: Automating Application Setups > RIS is "Remote Installation Services"
Deployment
Microsoft OEM System Builder

What Command Line Switches Are Supported? Windows Installer

227091 - Command-Line Switches for the Microsoft Windows Installer Tool (MSIEXEC)

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Utilize these resources:
UDFs (Full List)
KiXtart FAQ & How to's