HERE's A GOOD ONE FOR ALL YOU EXPERTS...3 computers through a netgear switch to Main computer that is connected to the net by a cable modem. All computers can talk to one another and the main computer can connect to the net. The 3 others can not.I have run the wizzard turned off and on modem and computers in sequence renewed ip address uninstalled all network cards and reinstalled them manually configered ip adresses on all lan network cards IE 192.168.0.1 and 192.168.0.2 and so on. The IP adress on my network card to my modem was automatically configered and it is 144.136.137.148 This system was WORKING fine and just fell over one day.The client computers all came up with limited or no conectivity one morning and  i went to renew the ip addresses automatically but couldn't so i configered them all manually which got me connected up lan wise but now no internet. I got an mates computer put in a network card and plugged it in to the switch to see if he would connect and got the same result..... limited connectively.I think the problem is in the HOST computer .......and i have ics activated on my Have to double check this ....okay internet connected network card.......any takers Solved my problem by running Winsockxpfix and now all back on webThanks for keeping us UPDATED.