FIREWALL ?

What your trying to do can be done but you have to be very careful how you do it. If you want to, you can go to you favorite search engine and look for software firewalls. Many of them are free and work great! The only problem you might have is that blocking people from downloading from web sites. You could actually make another box into a filter and list the sites that you dont want people to go to. Another useful program is deepfreeze. It keeps the original setting on the computer and whenever you reboot, it come back up exactly how it was when you froze it. If you have any questions futher on this subject, feel free to e-mail me.