I want to make a network between two xp pro pc's and to share internet and files. I have cable modem connected to 1nic on my 1pc. and 2nic on my 1pc connected to my 2pc with crossover cable. ip settings for the 2nic on my 1pc(lan nic): IP: 10.10.10.1 subnet mask: 255.0.0.0 ip settings for the nic on my 2pc: ip: 10.10.10.2 subnet mask: 255.0.0.0 default gateway:10.10.10.1 dns server:10.10.10.1 the ip settings for 1nic on my 1pc connecting to cable modem can be automatic using DHCP server or set static: ip: 192.168.1.2 subnet mask:255.255.255.0 default gateway:192.168.1.1 dns server:192.168.1.1 I am not sure what exactly I should set in network setup wizzard but anyway I am choosing second option: (lol something new just appear. When I start network setup wizzard a message appear: the wizzard found a shared internet connection on the computer "Unknown Internet connection Sharing device" I wonder where did came from when I disabled the windows firewall/ICS service. and also this Internet Gateway appear in my network connections from time to time from nowhere. Any suggestions?) when I am making the network I am choosing: "This computer connects to the internet through residental gatewat or through another computer on my network" option on both of the computers. Is this correct? Allowing file and printer sharing on both. Choosing same workgroup. A have made accounts on both of the pc's same names same passowords one is administrator the otherone is limited (dont want to wake up one day and my father to tell mepss sorry deleted d: and e: drive by mistake ). I share the internet to the second pc using software proxy server. OK everything working fine: I can access files, watching moves through the network and using internet for .... some time (2 hours) usually after restart but sometimes without everything stop working. I am accessing pc's using \\ip adress and when it open the folders and network neighbourhood expand it shows that pc's are in workgroup "UNKNOWN" not the workgroup i choose and set before for example "HOME" when i right click my computer it shows that the computer is in "HOME" workgroup. I have check the cable the connectors and the lan cards they seems to be ok. I have Panda antivirus platinum installed with firewall and in the rules i allow all connections and ports for both mac adress and ip for each lan card. Dns names of the computers never worked. Earlier I was enabled ICS but now it is disabled (the service). Is ICS bugged and messing all my setting? Sorry for this very long post but I wanted to explain everything so you can have better view of my problem. Pls help. Why everything (sharing files and internet) is working and then suddenly stop (cant find computers using \\10.10.10.1 or 2 and even cant ping each other)? Why the computers showing in "unknown" workgroup and in the options showing "home" workgroup. And what is this Internet Gateway appearing in my network connections from time to time? PLS PLS PLS help me I am confused and lost.