i have not bought a new external harddrive ever before and i wanna know how they work. i want to know how i go about transfering files from my internal harddrive to my external harddrive. does it come with a program or something? would it be like a drop folder, and you just drag things into it ? or is there a program i would need to download. and, when im downloading something, how can i control it to going to which harddrive ? (if i download any more movies, i wanna make sure they go on my external hd, so can i download the files right to the ex hd ?) sorry, just one more question, do i just leave my external hd plugged in all the time ? or can i take it out and bring it to different computers ?