How to view wireless security settings on existing wireless networks?

At a local coffee shop. My Mac laptop connects to the local wifi no problem. My buddy is trying to connect his Windows laptop with no luck. I would like to simply view the wireless security settings on my Mac to verify the encription type and password. How and where do I go on my Mac laptop to do this?

Thanks!

I am not absolutely sure whether you can view the password of the wireless network you're connected to, but if you are, it'll most likely be in System Preferences > Network > Wi-Fi. You can view a network's security type by clicking Advanced.