Internet Explorer Content Advisor

I would like to know which registry key to edit in the registry to delete the Internet Content advisor Supervisor password. Users normally gain access to the internet without having to key in a password, but someone enabled the content advisor Supervisor password and users cannot gain access without entering the supervisor password. I cannot disable the supervisor password unless I key in the password and non of the users knows it.
This is how to get to enable the Supervisor Password for Internet explorer 5.

On the Tools menu, click Internet Options, and then click the Content tab.
In the Content Advisor area, click Settings, and then click the General tab.
Click Change Password.