The default vendor setup was created with INNO SETUP and you can use /SILENT or /VERYSILENT. The trick is the registration codes. This vendor stores the registration info in the current user registry so you'll have to give your user the regcode to apply using this method.
A better and more successful method is to repackage this as a Windows Installer package. Put the current user registry keys tied to the main exe and they will be repaired when the user launches the app. Works like a charm.