Using I2C to communicate with arduino in LabVIEW.

[RoboNerd01]

I have been trying to use the WPI I2C library to communicate with my arduino mega 2560 for a LCD display for a while now... But the problem is that LabVIEW tries to verify that the "sensor" is there and wont send ANYTHING to it until it receives a response from the "sensor". Has anyone ever used I2C for anything close to this, or at all? Or is there a better and easier way to do communications? I searched everywhere but could not find ANYTHING on this.

And I'm curious if it is legal to use an Ethernet shield of our robot.

Thanks.