text: internet connection sharing to 3 systems..? i have 3 computers with 5 nic cards.  the pc connected to internet has 3 nic cards and others contain each nic card.  the main system is connected through one nic.  i have the cross over cables.  i know how to share for 2 systems.  but i am getting trouble in setting up for 3 systems.  need help, any suggestions.  thank you use  hub , switch or router