Home Network not working after installing Family Safety

Related to: Family Safety: Frequently Asked Questions

I have installed Microsoft Family Safety on two (One Windows XP Professional, one Windows 7) of 4 computers (two others - one is XP Pro, other is WIndows 7) in my home, and as soon as I did this, I lost the ability for the computers to talk with one another over the wireless connection (can't even ping their IP address). Networking is not working, but when I connect with an ethernet cable, I can at least ping the IP address. I can also see the "media devices" for the other Windows 7 computer. The Windows XP computers have the link for the network place, but when I click is say the location is not accessible, and I might not have permission to use the network resource - contact administrator (me).

Is there something that Family Safety does either on the PC or on the Wireless Router that is causing this? Do I just need to remove it and find another parental blocking solution?

Please Help!!