Hello.
(might be wrong section, sorry if)

This is a "Xp Home" thread.

Sometimes I help my neighbour with her computer. This time, it was kinda hard. Norton internet Security 2004, broke (don't know why), so it needed to be reinstalled, the problem is now, that I can't uninstall it, because when I try, it says that I need administrator rights, I have that, so what's the problem. The computer is without any protection right now, because I can't reinstall it because I can't remove the old one.

Odd.

Try running this:
http://www.majorgeeks.com/Norton_Removal_Tool_SymNRT_d4749.html