The Windows Registry Guide is a Windows help file that reveals all the best tweaks, tricks, and hacks for the Windows 95, 98, Me, NT, 2000 and XP Registries. The Registry is a database used to store settings and options for the 32-bit versions of Microsoft Windows. It contains information and settings for all of the PC's hardware, software, users, and preferences. Whenever a user makes changes to Control Panel settings, file associations, system policies, or installed software, the changes are reflected and stored in the Registry.

This version also includes a tutorial for beginners and links to relevant Internet resources.