I have cat5 wall jacks in every room of my house, but when i connect my computer to the jack, it doesn't respond. It doesn't connect to the internet or anything. i have tried two different computers and 3 different jacks. no response. I have a dsl modem connected to the cable line and i have a wireless router connected to the dsl modem. That gets internet fine. Its just the cat5 wall jacks that dont work.