DigitalWeb InstallWizard MSI Description:

The Windows Installer service allows setup authors to provide installation benefits such as application auto-repair, install on demand, rollback after a failed installation, reduced file conflicts, and more. InstallWizard Professioanl is an economical solution enabling users to leverage these Windows Installer benefits, without learning all the details of the technology. InstallWizard provides an intuitive interface that requires no direct table editing or scripting.