在VC++下模拟测试ppp，对使用gprs拨号上网编写程序可能有帮助。-in VC ppp simulation tests, the use of dial-up Internet gprs preparation procedures may be of help.

上传的包里包含了好几个经过实验验证的VC++源码，主要是实现基于tcp/ip进行网际互联时的仿真模拟，实现了从简单的客户模型到客户--服务器模型的通信任务，应该是有价值的。-Upload a bag containing several experimentally validated through the VC++ source code, is to achieve based on tcp/ip for internet connectivity for the simulation,

用VC++编写的基于MFC的即时通信软件设计，实现在线聊天功能，具有良好的稳定性，希望站长能够上传到本站方便其他网友参考和改进-Written in vc++ the instant communication software design based on the MFC, realize the online chat function, has a good stability, hope the webmaster can uploaded to the site for other