What is the Registry?
The Microsoft Computer Dictionary (5th edition) defines the Registry as:
"A central hierarchical database...used to store information necessary to configure the system for one or more users, applications and hardware devices. The Registry contains information that Windows continually references during operation, such as profiles for each user, the applications installed on the computer and the types of documents that each can create, property sheet settings for folders and application icons, what hardware exists on the system, and the ports that are being used."
Is it safe to edit?
Incorrect editing can lead to errors and can severely damage your system. To avoid this, you should always backup your Registry before editing.
How can I back it up?
1. Go to Start | Run and type regedit
2. Go to File | Export
3. Make sure that the "Export Range" is on All
4. Choose a filename and location that you will remember if you need to restore a backup.