拨号上网源代码， VC环境开发-dial-up Internet access source code, dial-up Internet access source code, the development of VC

XModem和YModem文件传输源码,VC/C++源码,网络相关,C++程序实现，供C程序员参考研究。-XModem and YModem file transfer source, VC/C++ source code, Internet related, C++ program to achieve, for C Programmer' s Reference Study.