Pity this doesn't work for networks, if you want an administrator password of any computer there is a simple solution to your problem that uses a usb run linux operating system that uses rainbow tables to brute force the password from the computers. This is very effective on windows xp and im sure there have been updates to the new operating systems. But if you really want to hack 'admin' at school and more importantly look like a pro hacker while doing it
You must login or register to view this content. is a great tool that i would recommend.