It sounds like you are in way over your head with these radios. They would only be useful when programmed with HAM frequencies, as they haven’t even been certified for part 90 business use. The radios come with Chinese test frequencies from the factory, which are use by other services anywhere else in the world. They are also illegal for part 95 use. However, there are probably thousands of these cheap radios being used on FRS. Check out this review by Hans, and the replies, for all the information you may need.
http://hamgear.wordpress.com/2012/08/11/review-baofeng-bf-666s-bf-777s-bf-888s-and-look-alikes/