Yes, I have exerience with Dual Recovery. It is the theory that many people with substance abuse issues also suffer from other mental disorders, commonly depression, anxiety, bi-polar, PTSD, etc. Proponents feel that if both issues are dealt with at the same time there is a much better chance at recovery.
It can be done hand in hand with 12-step recovery, if you like, or without it entirely. Generally the mental disorders are delt with with a combination of therapy and pharmocology. The addiction side is usually dealt with using group therpy, oftentimes 12-step, and sometimes additional one on one substance abuse therpy. I have found this to be a logical and effective means of treatment. However, at the end of the day, the choice to use or not to use is still an individual one. I feel dual therpy can give you a leg up by dealing with some of the underlying issues involved with addcition, but the individual still has to be comitted to it. Hope that helps. Take care.