MPU 6000 accelerometer configuration

Hi i am currentliy trying on the code that was provided in the arduino playground for the mpu 6000.
Im in need of help on how I can change the accelerometer value range for the mpu6000. As far as I know, its done through the AFS_SEL parameter, but since I am a newbie in programming I am not sure on how I will do it. All the AFS_SEL options was defined.

This is the MPU6000 datasheet
This is the MPU6000 register map descriptions

MPU6000.ino (31.4 KB)