What is a one-sentence summary of the following article?
It's the series of curving lines in the far-right side of the task bar. You may first have to click the ^ to the left of the volume or battery icon to see the Wi-Fi option. On Windows 7, the Wi-Fi icon looks like a series of increasingly tall bars. If you set up the router with a specific name, it should appear here. If you didn't set up a specific name, you should see the router's brand (e.g., "Linksys") and model number. It's in the bottom-right side of the Wi-Fi network's name area. You'll do this in the text box below the "Enter the network's security key" heading. If you didn't add a password to your network when setting up the router, the password (called a "Security Key") is on the back or bottom of the router unit. As long as the password is correct, your Windows computer will be reconnected to the wireless network.

Summary:
Click . Click your router's network name. Click Connect. Enter the network's password. Click Next.