免費資安－微軟 Windows SteadyState
系統恢復 他們或重回他們回到原始的狀態
去除任何和所有被安裝軟體

http://www.microsoft.com/windows/products/winfamily/sharedaccess/default.mspx
Windows SteadyState is a tool developed by Microsoft that gives administrators enhanced options for configuring shared computers, such as hard drive protection and advanced user management. It is primarily designed for use on computers shared by multiple people, such as internet cafes, schools, libraries etc. SteadyState is the successor to the Shared Computer Toolkit. SteadyState is available free of charge from Microsoft for computers running genuine copies of Windows XP and Vista.

適用於
圖書館電腦
常上網不存檔電腦
任何公共電腦

WDP 提供保護三個方式:
取消所有變動在再開機
臨時地保留變動
永久地保留所有變動