www.actioncoach.com is my company and as the largest company doing this in the world (1000 offices in 24 countries) I am sure we can help.
A couple of things to help you in selecting the right coach for you.
#1 - Look for a personality match. Make sure you and your coach get along, this will be a long relationship, so plan for it.
#2 - Do they have a system for helping you with growing the business? A lot of coaches can coach people on goals and the like, but you really need someone who can get results in business.
Hope you find the right coach for you, it can make all the difference.