xbox media player 2.4 question

[StartingLine]

i alredy installed the media player on the xbox
and i can run it..
but i cant manage to transfer divx,avi, mp3 or any kind of file
to the e drive of my xbox

what program do i need to transfer file to it?
and how do i set them up?
do i have to make a folder inside the xbox for the files?


thanks