To join a new wireless network in Windows 7 just follow the steps below:
- Locate the "system tray" in the lower right corner of the screen -
- Click on the Networking icon in the "system tray" -
- Now the list of available wireless networks will show up as shown below -
- Click on the network you would like to connect to -
- Click "Connect"
- The computer will then proceed to connect and prompt for any login information that may be needed for a secured network -