http://panoramaic.se/configurator/2.1/the above link is a easy to use tool, you need to know all the stats about your bird to use it, i recommend that you read up on multiwii, its the most powerful open source FC software out there in the form of functionality and expansion, as well as stability.
you are not required to do any programming, but what I tried showing you is how configure the existing programming to your specific bird. the reason for this is because multiwii is designed to use any number of sensors and flight configurations, from uni-copter to octocopter with anything from a simple gyroscope to gyro/acc/baro/compass/GPS configuration. it also allows you to use almost any TX/RX combo you can imagine from old analog systems to new RSSI enabled telemetry gathering super digital doppler radar systems (ok, i jest, slightly), and it has to do all this while maintaining a small software footprint within the arduino hardware.
hence the configuration.
all you need to do is open the config.h tab within aurdino, uncomment the type of bird you have (quad, octo, etc) and which sensors you have. to uncomment you simply remove the // in front of the statement.
it does require some reading, it may require a little patience as you connect