FTP is a file transfer protocol, click on ftp://zxprinted.com, open FTP window, Then you drag the file to the FTP window, or copy, Sticking to the FTP, file uploads completed.
You can also use specialized FTP upload tools, such as: CuteFTP, FlashFXP, FileZilla tools to upload your files, the benefits of these tools is the document could break the tradition, when the file not Upload complete for the accident, these tools can be disconnected from the Department re-upload, instead of beginning from scratch, these tools to transfer large files is a lot of good. On the use of these tools, many online tutorial.
Add-ons ftp username: file177, password: zx0000+
Upload your files through YouSendIt.