Coach Harv, (Harvey Kravetz) has very kindly agreed to us providing this brief guide to Coaches he has written.
There are certification training programs that train coaches to work with ADDers specifically.
As far as qualifications are concerned, be careful. They are basically self appointed 'certifiers. The profession is too new and unregulated. Furthermore we all know professionals who have credentials all over their walls, who we would never recommend. So, either interview coaches or seek a recommendation.
The largest and most complete source of all coaches is The ICF (International Coaches Federation). They have a website http://www.coachfederation.com that you can screen to find ADD coaches. You simply stipulate the criteria you want and the coaches with those parameters are then contacted by ICF. The coaches then will respond to ICF and ICF will then forward them to you. This method assures your confidentiality.
Their web address is http://www.coachfederation.com go to the bottom of the home page and click on "Find a Coach" button.
Tip for selecting a coach:10 Questions to Ask When Selecting a Coach
Coach Harv