Currently Being ModeratedDec 5, 2013 11:58 AM (in response to nikmark74)
You would need to setup Home Sharing to get media that is on your computer to your Apple TV. To get connect to the internet, go to Settings > General > Network and select your Wi-Fi network. The article below will assist you further.
Currently Being ModeratedDec 5, 2013 2:03 PM (in response to nikmark74)
Try AirParrot. For AirPlay Mirroring, the MacBook is not supported and you need to be at OS X Lion v10.7.5 or later. My late 2010 MacBook Air is also not supported but I use AirParrot software. The video is not as crisp as it is from my newer Mac but it works.