Same way as copying any other DVD, I think. Use the burning program that came with your burner or PCM, and find where it's "copy DVD" function is. If you don't have a burning program, try cdburnerxp (free download).
Kees
How can I copy a DVD that contains a software Window 7 onto the other blank DVD. Thanks

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic