How do i transfer files directly from mac to external HD

To transfer all my movies via FTP takes way to long, so I connected my external HD to my MAC. Now the problem is that I can’t find the directory “movies” to put my movies in. To which directory I do have to transfer my movies (DVD and ISO)?

Why not try this option instead of runnnig around with an USB disk

http://forum.atvflash.com/viewtopic.php?f=6&t=1767&start=0&hilit=macfuse