说明：  在Windows XP环境下，在子网中在建立一个子网，实现局域网中一个有线和无线的Internet共享。手机和计算机通过WIFI实现Internet和文件共享。
(In Windows XP, in the subnet in a subnet, in a wired LAN and wireless Internet sharing. Phone and computer via WIFI Internet and file sharing to achieve.)