Installshield silent installation is supported with DOORS 8.3. This means that rather than having to install DOORS from a physical DVD, choosing the same options time and time again, you can create an installer that will record your preferred settings once and then allow you to install in a more cost efficient and timely manner.
To do this, first run each product installer from the command line, using the /r option (for record):
e:\doors\setup.exe /r /f1c:\responses\doors.iss
This installs DOORS on your system, and produces a response file in C:\responses\doors.iss, which contains details of your selections on each install screen. You can then copy the response file to other systems, and run the installer using the /s option (for silent) and the same installation choices:
e:\doors\setup.exe /s /f1c:\responses\doors.iss
In this mode, the installer will run without prompting for information.