Razor 9DOF IMU

Hey guys,

I just got my Razor IMU 9DOF (AHRS) today, and have absolutely no idea on how to use it with Arduino. I want to use it to stabilize my quad, naturally. So how do I go about getting values using arduino? And would someone be so kind as to explain the DCM algorithm as well? I'm a total newbie but I'm extremely eager to learn! I've done a lot of research on the sample codes, but I really don't understand them at all! :~

Thanks,
Ajit