Wireless Local Area Network (WLAN)
A WLAN is a series of interconnected computers that communicate with each other over the air waves rather than through a network cable connected to each computer. In a WLAN, a radio communications device called an access point or wireless router connects network computers and provides network access. The access point or wireless router and the wireless network card in the computer communicate by broadcasting data from their antennas over the air waves.
What You Need to Establish a WLAN Connection
Before you can set up a WLAN, you need:
•
•A broadband modem that is connected and working
•A wireless router or access point
•A wireless network card for each computer that you want to connect to your WLAN
•A network cable with the network
Checking Your Wireless Network Card
Depending on what you selected when you purchased your computer, the computer has a variety of configurations. To confirm that your computer has a wireless network card and to determine the type of card, use one of the following:
•The Start button and the Connect To option
•Your order confirmation
Start Button and Connect To Option
In Microsoft Windows XP, click Start→ Connect To→ Show all connections.
NOTE: If your computer is set to the Classic Start menu option, click Start→ Settings→ Network Connections to view your network connections.
In Microsoft Windows Vista, click the Windows Vista Start button 
→ Connect To→ View network computers and devices.
Setting Up and Using Networks
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