An installation that is performed without user interaction and does not display any message or GUI during its progress is known as silent and unattended installation. In this paper we have proposed silent unattended installation package manager (SUIPM) that automates the process of silent unattended installations and un-installations and requires the minimal possible level of interaction with the user. Silent unattended installation package manager (SUIPM) not only introduces new methodology but generalize the process of silent and unattended installation /un-installation. Agent based activity monitoring system - ABAMS is responsible for the deployment of SUIPM packages on the specified locations of the network. The process is fully autonomous and does not require any user interaction. SUIPM has been evaluated on large number of softwarepsilas and results were very promising and support the implementation of the solution.