how to use labview program remote control the LED on wishield+arduino?

I'm doing a project using signal generates by labview program(on my desktop) to remotly control the LED on wishield+arduino. And I'm new to the arduino. I'm wondering: the desktop and arduino must be both under the router's network, right? how to program the Wishield+ arduino uno to receive the data from the router? and can i program use labview (I have installed the labview toolkit for auduino)?