Windows系统可以通过修改注册的方式来改变一些细微设定以达到每个人使用需求。TweakNow WinSecret是免费的软件，支持XP/Vista系统。它提供了一个方便的界面来达到修改、优化系统的目的，不用怕修改错了造成难以恢复的损害。

更新日志：

TweakNow WinSecret 2012 v4.2.0

System Information: Added Optical Drive module.
System Information -> Video: Added OpenGL Driver module.
System Information -> Operating System: Added Startup Items module.
System Information -> Operating System: Added Audio and Video Codec module.
System Information: Added Environment Variables, Special Folders, and Windows Services module.
General: Added support for Windows 8 Release Preview.
General: minor improvements and bug fixes.