To grant Full Control of a registry key
Open Registry Editor
Click the key to which you want to grant Full Control.
On the Edit menu, click Permissions.
Under Group or user names, click the user to whom you want to grant Full Control of your registry key.
Under Permissions for name, where name represents the name of the user to whom you are granting Full Control of the key, select the Allow check box for Full Control.
Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on your computer.
To open Registry Editor, click Start, click Run, type , and then click OK.
You can permit another user to take ownership of a registry key only if you are the current owner of the key.
To permit a user to to take ownership of a registry key, you must first grant the user Full Control of the key.