How do I Use an FTP?

The File Transfer Protocol (FTP) is a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet. FTP is built on a client-server architecture and uses separate control and data connections between the client and the server.

http://windows.microsoft.com/en-us/windows/work-with-files-ftp-site#1TC=windows-7