To take ownership of a registry key
Open Registry Editor
Click the key you want to take ownership of.
On the Edit menu, click Permissions.
Click Advanced, and then click the Owner tab.
Under Change owner to, click the new owner, and then click OK.
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 take ownership of a registry key if you are logged on as an administrator or if you have been specifically assigned the permission to take ownership of the registry key by the current owner.