Here is an excellent FREE Wi-Fi tool for looking at wifi networks, it’s like netstumbler on steroids and easier and quicker to use than say Kismet, of course nothing beats hard core Kismet and Airodump etc, but this application has very good built-in tools!
The Xirrus Wi-Fi Inspector is a powerful tool for managing and troubleshooting the Wi-Fi on a Windows XP SP2 or later, Vista, or 7 laptop. Built in tests enable you to characterize the integrity and performance of your Wi-Fi connection. Applications include:
- Searching for Wi-Fi networks
- Managing and troubleshooting Wi-Fi connections
- Verifying Wi-Fi coverage
- Locating Wi-Fi devices
- Detecting rogue APs
More info Download, Users Guide and Video Tutorial here: