Setup is a program or a method for carrying out an interactive installation or upgrade on a single computer. The Setup program is also the basis for the following installation or upgrade methods which are not unattended installation, Remote Installation Services and image based installation with the System Preparation tool . The installation or upgrade can be carried out from the CD drive or across the network . In the windows operating system all the software are in the Setup form with .exe file extension. It is set of procedure have sequential statements which are installed step by step. Setup is Core backbone of windows operating system Applications.