How do I make my Vista Computer secure from the Super Administrator trick?

Question

I have Windows Vista and I am an Administrator and I made a limited account for my sister but she keeps using the net user administrator trick to make herself an administrator.

I want to make the computer secure so that I and only I can be the administrator because she downloads stupid and possible harmful programs on the computer.

It seems that even if I make her an account with parental control she can use the Command Prompt to make the Hidden Administrator account come up.

Help please!!!

Answer 1

Try this parental control, its free.

K9 Web Protection 3.2.36

http://www1.k9webprotection.com