Windows Registry is not Ghost

If you haven't spent much time in the Registry, you can easily be cowed by it. At first glance, it's a maze of apparently incomprehensible settings. In fact, though, there's a method to the madness. The Registry is a hierarchical database of information that defines exactly how your system works, including virtually every part of XP and its applications. Editing the Registry database is often the best way to hack XP. In fact, there are many changes to the operating system that you can make in no other way.
Even if you've never used the Registry directly before, you've changed it without realizing it. Whenever you change a setting using the Control Panel, for example, behind the scenes a Registry change is made that puts that new setting into effect. The menus and dialog boxes you see in XP are often little more than a visual front-end to the Registry.

If you want to optimize XP and master every part of it, you'll have to use the Registry. XP contains so many different settings and customizations that it simply wasn't possible for Microsoft to build a graphical interface for every conceivable possibility. And there are many times when it's easier and you get more options when you edit the Registry rather than using the graphical XP interface. You can use Windows XP without ever editing the Registry—many users do—but advanced users understand its power tool status.

The way to edit the Registry is by using the Registry Editor , also called RegEdit. To run it, type regedit at the Run box or command line and press Enter.

Before you edit the Registry, though, you should first get a basic understanding of its structure.