No Arduino examples.
link to the datasheet - http://www.sparkfun.com/datasheets/Components/AD7746.pdf
page 12-19 is about the programming the CDC device // not trivial
link to an example - http://www.sparkfun.com/Code/LPC2138_Test_IIC.zip
Although it is no Arduino code, reverse engineering its logic should give you the insights needed to communicate with the device
As it is a I2C device you should learn how to use I2C and I2C devices. Start with reading:
I would do it in this order
1) start reading the reference and playground first, so you understand how I2C works,
2) then read the datasheet carefully but only once.
3) Then try to understand the example code.
4) build upon Arduino.