You have to be *disadvantaged* to qualify. You basically get to do the first year of med school over 2 years (this is a simplification on my part, but gives the big picture). I don't know how many they interview each year, but I believe there are usually 10 spots (heard rumors that was dropping, though).
You're probably best off contacting the school. I don't believe that there are any active SDNers who are/have been in the program.