well.. if you could try rephrasing yourself...
as I understand it you have downloaded something via bittorrent, and you want to burn it on to a dvd-r... what kind of file did you download? etc. video, program, consolegame?
all you have to do is burn the files as you would normally do them, like if your thinking you have to burn the torrent to the dvd-r disk, then your waaaay off course..