First, I am unaware of how DWI programs are presently organized. I have some sort of weird fetish with scientific research, so I would suggest trying to find a program that has been statistically correlated with reduced incidents of DWI.
Ok, ok... blah blah blah...
If I were to come up with my own program from scratch, I would consider this:
Assign students into small groups (4 to 6) and provide them with an assignment: Read local newspapers over a period of time, and cut out all articles related to DWI. Ask the groups to discuss these articles amongst themselves and to come up with their own opinions about DWI.
Offer some suggestions: Is DWI a major concern? Exactly who does DWI affect?
Do NOT lead! Do NOT offer your own opinions! Do NOT judge!
Try to comfort the students by explaining that their opinions will not be judged!
After the groups have formed their own opinions, assemble all the groups together. Ask each group to designate a spokesperson to discuss their opinions with the rest of the class/school/whatever.
As a teen, I was less interested in "The Man's" opinion, but EXTREMELY interested in my peers' opinions.
Bonus: Low Budget. Who could dare put up resistance?