A Dell laptop connects to a wireless Internet router in the same way that any laptop running Windows does. As long as your Dell laptop has a Wi-Fi card (and all Dell-manufactured laptops these days do), you will be able to connect to Wi-Fi Internet quickly and easily using the steps below.
Go to "Start," "Settings," "Network Connections."
Make sure the "Wireless Network Connection" icon does not show "Disabled" under it. If it does, right-click the icon and click "Enable."
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Double-click the "Wireless Network Connection" icon. Choose the wireless network you'd like to connect to, and click the "Connect" button in the bottom right corner. If a password is necessary, enter it and click "OK." You are now connected wirelessly and can open a web browser to use the Internet.