Would someone please give me a response as to how to block certain websites for anyone that uses my computer? I am desperate. Thanks

Go to "Tools" at the top of your page.

Click "Internet Options".

Click on the "Security" Tab.

Click "Restricted Sites".

Then click the button that says "Sites" and you can add the websites you want restricted from your computer :)

Another method: the Hosts file

The Hosts File and what it can do for you (http://www.bleepingcomputer.com/tutorials/tutorial51.html)