Using Regedit
Most people never need to edit the Registry by hand because most Registry keys are set by the software that uses them. However, you might need to edit the Registry by hand if you’re directed by a technical support person who’s helping you fix a problem, or when you’re following a published procedure to make an adjustment for which there is no Control Panel setting.
In the latter case, before going any further, we need to say this one last time, to make it absolutely clear: unless you’re quite certain that you can’t make a mistake, back up the Registry (or at least the section you want to change) before making any changes.
The next few sections cover the basics of the Registry Editor.
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