回复：求助，一个猫，不用路由器，两台电脑要怎么样才可以同时上网！

Using windows' internet sharing function. Go to windows help and type 'internet connection sharing', it will show you how to set it up. The computer connected to the modem has to be up for the other computer go to the internet, if you do not have hub, using cross over cable direct connect them, if you do not have network cards forget it.