Assuming you have the laptop in your posession, or he can take some time, go to
www.download.com or other software site and download a DVD burning program. You do have a DVD burner in the laptop I hope? Usually if you have a DVD burner they come with some type of burning software included.
Nero Burning is a popular one but there are plenty that are cheaper and may be some that are free.
Make sure that the file format you put on the disc is one that is approved for your contest - probably an mpeg version.