What do you hope to accomplish by using parental controls? Do you want to stop your children from viewing adult content, etc.?

Children can easily gain access to adult content with Limewire. There's no foolproof way to stop them from doing so, except for direct supervision.

I'm not quite sure what your question is. Hope this helped.

Dano

P.S. I would advise installing another (free) firewall. Many people have difficulties with Norton, but that does not mean you have to go without a firewall.