System Administrator message

My young daughter downloaded something accidently (I think a tool bar or
something) for the internet and I went to remove it from the unistall
program. But, when I click on the program to remove it a message comes up:
System administrator has set policies to prevent this installation. After I
click off the message another message comes up: You do not have sufficient
access to uninstall/change this program please contact system administrator.
I don't know much about comp. but I am pretty sure I am the system
administrator. I was wondering how I can remove it another way?