You can search for FileMaker Business Alliance members in your area at:
Another resource would be freelance sites (if you don't have the financial resources for a full-blown consulting firm) such as eLance or guru.com.
When I see myself in the same situation, I used www.freelancer.com .
The tricky part is to select the right person to the right job. I managed to get a very good person to add on my DB.
A very specific description of the results you want to achieve, help prevent misunderstandings and $$$ issues