All Mintra Systems application products (http://www.mintrasystems.com/world/products) use Inno Setup, which means that they accept the following standard parameters: /sp- Suppresses any "Do you want to install...?" confirmation box, although Mintra installers have this disabled by default. /silent Installs the application with no user interaction. The user still sees progress information, but cannot interrupt the process. Note that if /norestart is not used, then the user will be prompted whether or not to restart if it is needed. Error messages are still displayed. /verysilent Installs the application with no user interaction or interface. The user does not see any activity on screen. Note that if /norestart is not used, and a restart is needed, then the system will be restarted without prompting the user. Error messages are still displayed. /nocancel Prevents the user from cancelling installation. /norestart Prevents the installer from restarting the computer. Most Mintra Systems software will not require a restart. /dir="<dirname>" Specifies the installation directory. <dirname> must be a fully-qualified path, e.g. C:\Program Files\iICO. /group="<foldername"> Customises the name of the program icon group in the Start menu. This setting has no effect if the installer does not normally allow you to customise this option, as is the case with most Mintra products. /noicons Instructs the installer to skip creating Start menu icons. An appropriate command line format could therefore be (in this case, installing iICO): setupiico122.exe /silent /nocancel /dir="C:\Program Files\iICO" /group="iICO" Edit: Changed link to mintrasystems.com, to reflect the domain change.