Windows 7 and Vista don’t allow users to modify system files due to security reasons. Taking ownership manually is a tedious task and is sometimes confusing. Below is a small and portable utility that makes this task very easy.
Take Ownership adds a Take Ownership Context Menu Item to all files and folders. This menu option can be used to modify discretionary access control lists (DACLs) Or to grant you permission to modify a file or folder. Now, just right-click a file or folder to take its ownership in a single click.
Download TakeOwnership, Extract to any folder, and run TOwnership.exe
via [Addictive Tips]