How can I send a product's CD key during a Windows Installer installation?

A. Usually, when you use Windows Installer to install a program, you must still enter the product ID; however, you can send this information with the MSIEXEC command:

msiexec /a [msi file] PIDKEY="[CD key]"

Optionally, you can supply USERNAME=[user name], COMPANYNAME=[company name], USERINITIALS=[user initials].