The installer for Rhino 3.0 can be run silently using the syntax found at:
http://www.rhino3d.com/script.htm
See also InstallingRhino
\Rhinoceros\Setup Rhinoceros (EU).exe
Installs English, French, Italian, Spanish, German, Polish, or Czech languages.
Requires European CD-Keys (not Asian ones, below).
\Rhinoceros\Setup Rhinoceros (JA).exe
Installs Japanese language.
Requires Japanese CD-Keys.
\Rhinoceros\Setup Rhinoceros (KO).exe
Installs Korean language.
Requires Korean CD-Keys.
\Rhinoceros\Setup Rhinoceros (TC).exe
Installs Chinese language.
Requires Chinese CD-Keys.
The splash screen that appears when you put in the CD can be disabled by executing the C++ function AddGlobalVar.
Be sure to run DeleteGlobalVar prior to exiting your installer, or no McNeel product installation CDs will work properly until the system is rebooted.
When you execute these installers, please be sure that the working directory is the same as the installer EXE, otherwise you might get installations that are incorrect.
See Wiki article InstallingRhino