http://en.wikipedia.org/wiki/Cabinet_%28file_format%29
"In computing, CAB is the Microsoft Windows native compressed archive format. It supports compression and digital signing, and is used in a variety of Microsoft installation engines: Setup API, Device Installer, AdvPack (for the installation of ActiveX components from Internet Explorer) and Windows Installer."
"Microsoft Windows provides two command-line tools for creation and extraction of CAB files. They are MAKECAB.EXE (included within Windows packages such as 'ie501sp2.exe' and 'orktools.msi'; also available from the SDK, see below) and EXTRACT.EXE (included on the installation CD), respectively."