This utility can be used to keep your internet connection alive if your ISP would otherwise drop the connection after a period of inactivity or after you close your Internet client program.
来源: http://www.freevbcode.com/ShowCode.Asp?ID=1046
如果你的ISP在连接一段时间后掉线或者在你关闭你的网络客户端程序之后这个工具能用来保持你的网络连接畅通。