Help with Nero reqiured PLEASE

Im trying with some difficuitly to burn a windows media file to my DVD via Nero. After it encodes it for some 2hrs! it writes it to my c: drive? yet the “choose player” is set at D; DVD drive. Any help.
Im using the drag and drop method, putting the file in the left hand box, is this right. I still have a CD copier installed, as master then the DVD as slave, should I change these around, or get rid of the CD.
Thanks Graham