Video Menu on Windows DVD Maker

How do i get the video clips that i upload to DVD Maker to show up in the
"scene" section of the top disk menu??? the videos upload successfully
because i have watched the DVD, but on the play/scene top menu it is just
black and blank.....the videos that i am uploading are vids from a digital
camera that were in .mov format and i used a converter program to convert
them to the proper .wmv format so that is not a problem

thank you for any responses!!!