I have a dual LAN on my mother board. I've enabled the ICS in the sharing tab in the IPv4 Properties. 1=Host 2=Guest No.1 is my main computer and has 2 LAN cards on the motherboard. No.2 is the Media Center. I have a LAN cable to connect them. It used to work when No.2 had WIN XP. Now I can see them in the network area but No.2 can't access computer 1 and can't use internet from no.1 How to fix this?