Najwa A4 Windows Manager is a program to optimize your Windows XP operating system. This program is made for user that want to easily change or customize their Windows XP even without any registry or any other knowledge at all. Windows is, after all, a great system for performing standard tasks, using applications and managing files. But if a user wants to adjust, optimize or trim down the system, it stops being quite so easy. Many desirable functions are not even possible with the on-board Windows tools.