XP Multi-Tool 1.0 is best for tweaking some Windows settings. Also it allows you to change your explorer background. Also this software removes you system restrictions like disabled registry editor, task manager, folder options due to virus or your administrator.
This software also removes the drive autorun virus due to which you can not open your harddisk and USB drives (Pen drives, Memory cards, etc.) by double clicking.
Requirements: Microsoft .Net Framework v 2.0
