We need an application which will work as parental control , block keywords from any communication protocol including email, chat, htpp etc. So if I want to block "baby" word then any web page I open will replace it with let us say "zzzz". It should also allow/disallow use of any application. It should include drivers to filter data and work across windows 2000 to windows 7. For vista and windows 7 you can use WFP. Please review parental control in Kaspersky internet security, uyou can download it for free.