NXShield DX With HMC6352 Compass Sensor

Can someone help me figure how to use the NXShield DX (for two IRSeekers V2) along with the HMC6352 Compass Sensor? I am brand new with Arduino, so bear with me. The HMC6352 Compass Sensor is i2c. I believe that it is because the Compass Sensor has an i2c address of 0x42 and while going through the documentation for NXShield DX, one of the registries was also 0x42. Is this the problem? If so, how could I fix this?

Now that you have your first post out of the way, you can post links.

This would be a good time to make use of your new powers.