实现ftp的上传和下载.在程序中，可能会用到，上传和下载一些文件，或者一些C/S系统的自动更新等。-Achieve ftp upload and download. In the program, may be used to upload and download some files, or some C/S system, automatic updates.

EmailSMTP,使用PB开发,调用SMTP协议发送邮件-EmailSMTP This program sends E-Mail using the SMTP protocol. The SMTP object inherits from my Winsock object. It supports HTML formatted messages and attachments. Images embedded within HTML messages are also sup