Using Take Ownership will change the "owner" of the item to be your user account, and gives administrators full control of it.
After you have taking ownership of the item, you may sometimes still need to Allow
your user account Full Control
of the item before you will have full permission
to access it, to be able to modify, or delete it. See steps 11 to 22 (Option Three) in the tutorial below for how. Take Ownership of file - Vista Forums