Isn't there some sort of parental control you can implement?

edit:// I got this from uh, about.com but it's only about IE.

In Internet Explorer...

1. Click "Tools"

2. Click "Internet Options..."

3. Click on "Content" tab

4. In the "Content Advisor" section click on "Enable..."

You are now in the Content Advisor. From here you can set your settings.

* "Ratings" tab - Set rating levels for: language, nudity, sex and violence.

* "Approved Sites" tab - Name sites that you will allow your children to always view or name sites that you neve want your children to view, regardless of the site's rating.

* "General" tab
o Allow or disallow your child to see sites that are not rated.
o Create a password - this is great for use with older children. You set a password, then if your child goes to a site they want to see, but it is a disallowed site, you can allow the site using the password. You will have the option to always allow the site or only allow it this one time.
o View or modify the rating system