This FAQ applies to Nokia Lumia phones with Windows Phone 7.
You can use the Zune PC software to connect a computer to the Windows Phone using a USB cable or Wireless network.
With Zune you can:
To download and install Zune, or to learn more about Zune, go to xbox.com/live/zune.
When you have installed Zune, for the first sync the phone must be connected through a compatible USB data cable to your PC. On your computer, open Zune, and follow the displayed instructions.
If you are using an Apple Mac, download Windows Phone App from Mac App Store.