Norton SystemWorks 2006 Basic Edition Norton Cleanup has expanded its feature set to encompass a greater deal of functionality and accessibility. With Norton GoBack you can easily undo PC problems. Restore your PC to a healthy state by going back minutes, hours, or even days (depending on available disk space). It also restores files that have been deleted or modified. Includes CheckIt Diagnostics and System Optimizer System Optimizer allows user to change setting configurations within Windows XP. Enhance your computer's performance. Diagnose, repair, and recover with confidence.