How do photo studio's transfer pictures from their cameras to their computers wirelessly?

Do you know of the program they might use or any tech that i might be able to buy to make it wireless i own a nikon d3000

BLUETOOTH

It has to be built into the camera - does your camera have it? Based on online pricing - not.
This is a pdf of the manual http://www.nikonusa.com/...oprint.pdf and on page 105 it says you have to use a cable
although wireless USB replacements exist - for several hundred dollars - and leave a dangling appendage on the camera.

Http://www.eye.fi/

The simplest way is using an Eyefi card. You just plug it in where the memory card goes, and you can transmit to any computer using Wi-Fi.