I am running Windows Vista operating system in my Dell Laptop. I want to take ownership of some protected file by the Take Ownership Tool. As i want to make changes in the vista system folder. I will required to delete or modify some services. The system files are protected and do not allow to alter. Where i will get the Take Ownership Tool. Before that, I tried to move or modify by them but vista pop-ups the message of protected file. In a simple way i need the ownership of the files to modify them. How can i do this.