The easiest way is to use MFile via the web.
Or you can use SFTP software:
Windows. Use SSH Secure Shell software. For information about obtaining and using SSH Secure Shell, see Using SSH Secure Shell to Transfer Files with sftp [Windows] (S4299).
Mac OS X. We recommend that you use the Fugu program, which provides a graphical user interface to the secure file transfer capability of the Mac OS. You can download Fugu over the web or get it on the Blue Disc.