A good place to get started searching is the APDT (association of pet dog trainers) or the IAABC (international association of animal behavioral consultants).
It's really important to get someone who will come to your home, since that's where a lot of the problems are taking place. Other things I would look for are extensive experience, involvement in other dog activities beyond just "doggy rehab" (shows dedication, IMO - maybe also involved with rescue, or agility, or showing), and an extensive question and answer session during which the trainer is more than happy to answer any of your questions (defensiveness = bad sign) and will ask you more questions than you ever felt possible. You want someone you feel is really listening to you, not just giving a "pre-packaged" response. You also want someone who seems to actually like dogs - the trainer should seem to enjoy your animals and be confident around them.
People I found quickly, not sure how close they are:
From the IAABC:
Heide Coppotelli, PhD, CDBC, Brevard, North Carolina: dogs, service & therapy dogs Dr. Coppotelli is a psychologist and dog behavior consultant in private practice, including the use of dogs in trauma rehab and other treatment.
E-mail: [email=goodshepherd@infoave.net]goodshepherd@infoave.net[/email]
Jennifer Shryock, BA-MPH, CDBC, Cary, North Carolina: dogs Ms. Shryock is owner of
Family Paws, offering canine behavior consulting with a specialization of children. She is the Creator of the
Dogs & Storks...infant safety programs. Jennifer is also the United States Vice President & Education consultant for Doggone Safe, [link
http://www.doggonesafe.com.%C2%A0]www.doggonesafe.com. [/link] Web: [link
http://www.familypaws.com/]www.familypaws.com[/link] E-mail: [email=Jen@familypaws.com]Jen@familypaws.com[/email]
[email=Jen@familypaws.com]
[/email]
Molly Stone-Elmore, CDBC, Wake Forest, North Carolina: dogs Ms. Stone is a dog behavior consultant. Email: [email=info@communicanine.com]info@communicanine.com[/email]
From the APDT:
Michele Godlevski, CC, CPDT
[link
http://www.dogtrainingraleighnc.net/]Teamworks Dog Training[/link]
Telephone: 919-696-5558
Website: [link
http://www.dogtrainingraleighnc.net/]www.dogtrainingraleighnc.net[/link] E-Mail: [email=teamworkshelp@yahoo.com]teamworkshelp@yahoo.com[/email] [email=teamworkshelp@yahoo.com]

[/email]
Services: Doggie Dayschool, Manners, Rally, Musical Freestyle, Therapy Dog, Agility, Tracking, Dominant Dogs, Fearful Fidos, In-Home Behavior Consultations & In-Board Training.
Joanne Murphy, CTC, CPDT
[link
http://www.dogdynamicsnc.com/]Dog Dynamics, LLC
[/link]
Telephone: 919-349-2267
Website: [link
http://www.dogdynamicsnc.com/]www.dogdynamicsnc.com[/link] E-Mail: [email=dog-dynamics@nc.rr.com]dog-dynamics@nc.rr.com[/email] [email=dog-dynamics@nc.rr.com]

[/email]
Services: Certified Trainer & Behavior Counselor providing in-home behavior consultations & positive reinforcement training for all behavior issues. Specializing in Aggression, Fear,& Separation Anxiety problems in dogs. Serving Raleigh, Cary, Durham & Chapel Hill
Melissa Duran, CPDT, CPDT
[link
http://www.canineacclaim.com/]Canine Acclaim Dog Training
[/link]
Telephone: 919-341-2731
Website: [link
http://www.canineacclaim.com/]www.canineacclaim.com[/link] E-Mail: [email=info@canineacclaim.com]info@canineacclaim.com[/email] [email=info@canineacclaim.com]

[/email]
Services: I offer puppy and adult dog group classes, private training, CGC testing, doggy day camp, educational seminars, temperament testing and other special interest training classes.
Sylvie 
leasant
[link
http://www.trianglecaninesolutions.com/]Sylvies K9 Solutions
[/link]
Telephone: 919-779-3813
Website: [link
http://www.trianglecaninesolutions.com/]www.trianglecaninesolutions.com[/link] E-Mail: [email=sylviepleasant@nc.rr.com]sylviepleasant@nc.rr.com[/email] [email=sylviepleasant@nc.rr.com]

[/email]
Services: Private in-home training/consulting, group classes, behavioral problem solutions, workshops.
Jennifer Shryock, Dog Behavior consultant
[link
http://www.familypaws.com/]Family Paws[/link]
Telephone: 919-961-1608
Website: [link
http://www.familypaws.com/]www.familypaws.com[/link] E-Mail: [email=jen@familypaws.com]jen@familypaws.com[/email] [email=jen@familypaws.com]

[/email]
Services: Dog behavior consulting services specializing in child/dog interaction. Creator of Dogs & Storks programs...prenatal programs for families with dogs.
Ryan Douglas
[link
http://www.borntoleadk9.com/]Born to Lead K-9 Academy[/link]
Telephone: 919-762-8731
Website: [link
http://www.borntoleadk9.com/]www.borntoleadk9.com[/link] E-Mail: [email=Ryan@borntoleadk9.com]Ryan@borntoleadk9.com[/email] [email=Ryan@borntoleadk9.com]

[/email]
Services: We offer in-home dog and owner training for the entire Raleigh area. Specializing in obedience and behavior problem consultations for all dogs.
Samantha Seal, CPDT
[link
http://www.sunnyacrespetresort.com/] [/link]
Telephone: 919-383-4238
Website: [link
http://www.sunnyacrespetresort.com/]www.sunnyacrespetresort.com[/link] E-Mail: [email=syseal@yahoo.com]syseal@yahoo.com[/email] [email=syseal@yahoo.com]

[/email]
Services: Compassionate and practical dog training - basic manners, leash walking, aggression, multi-dog households and agility.
Edit to fix formatting a little