Registry Optimization for Windows NT/2000/2003/XP.
Similar to Windows 9x/Me, the registry files in an NT-based systemcan become fragmented over time, occupying more space on your harddisk than necessary and decreasing overall performance. You shoulduse the NTREGOPT utility regularly, but especially after installingor uninstalling a program, to minimize the size of the registry filesand optimize registry access.The program works by recreating each registry hive "from scratch",thus removing any slack space that may be left from previouslymodified or deleted keys.