Sometimes some wireless networks will not broadcast their Network IDs, as a security measure, in hopes of keeping the network hidden and only people who know of its existence will be able to connect to it.
To connect to a hidden wireless network, if you are authorized, follow these simple steps.
Click on the wireless network icon in the system tray in the lower right hand corner and click on
Open Network and Sharing Center
When the Network and Sharing Center window pops up, in the left side pane click on Manage Wireless Networks
Click on Add to create a new wireless network proflie
Click on Next and window letting you know that you have successfully added the wireless network will pop up.
Click on Close to close window.