1. Install the internal wireless adapter if you choose an internal device. These will require you to open your computer. Adapters are available for desktops.
2. Install the software that came with the wireless adapter. The software will start a wizard. Choose the default options unless you need an advanced configuration. Advanced options include setting up a network along with your wireless adapter. Insert the wireless adapter when prompted by the software.
3. Allow the adapter to be recognized and installed by the software and operating system. You will receive a notification in the notification tray when the wireless adapter is installed through the operating system.
4. After restarting your computer after the installation, open the wireless adapter software and choose the "Settings" menu to configure how to connect to wireless networks. The exact settings will vary based on the adapter. Common settings are whether to manually or automatically connect to available networks, saving passwords, setting security options and creating an IP address for the adapter.

A wireless adapter allows users to wirelessly connect to the Internet. Using a wireless adapter eliminates the need for having to connect your PC to a cable or a modem to connect to the Internet. Your wireless adapter allows you to have Internet access regardless of your location. You can use the connection provided to you by your service provider, or you can connect to Wi-Fi access that is available at most restaurants or hotels. This makes it easier to work while on the go.

A wireless adaptor is what you use with a router so that you can use more than one computer on the same network. You have to have a router in order to use the wireless adaptor. Many people use them in small offices and in there homes.