Hi, maniac0218. I'm from the Crossfire section, but I think I could help. How about you try and admin yourself via his account? If he has a password, then try to reset it. If none of these work, then ask him if you can become a computer admin. Also, if he says no, then your most likely not "old enough" to have the responsibility of admin on a computer. If I didn't help, then goodluck on finding better solutions.
Regards,
the_soup