I assume the OP wants help with using gFTP.
Your left panel is the local file system and the right panel is the remote server. The reason it is blank is because you are not connected. At the top of the app there should be windows where you enter the server address, username etc. However, for this to work a FTP server must be running on the windows PC.
Did you ever get SSH working? If so it might be easier to use winSCP which is a windows GUI SSH application that is similar to gFTP.