How to connect to internet with wifi?

I don’t have ethernet, so I have to use only wifi. I would like to use only Openbox, so the CLS. How do I connect to internet with wifi? I tried wpa_cli, but it says theer is no wpa_supplicant.

I asked the same question http://www.calculate-linux.org/boards/24/topics/24298 on another Calculate install I tried, but never got an answer.

http://www.calculate-linux.org/boards/15/topics/29561