Trouble reconnecting the sprayer
Yesterday night, my sink sprayer somehow got disconnected from the main water line under the sink. I cleaned everything under it and try to reconnect it, but it seems that I'm missing some kind of a quick connect adapter or something. My sprayer is my only faucet at the kitchen sink, there is no other ones. The hose from the sprayer has threads, but there are no threads on the water line to screw it in, so I must be missing some kind of an adapter in between. Please, look at the pictures attached. I have a feeling that this is something minor I can do myself, I just don't know what should I be looking for at the store. So if you can tell me the name for the part or the adapter, I would appreciate it.
Thank you.
http://img441.imageshack.us/img441/3116/wp000314.jpg
http://img9.imageshack.us/img9/7250/wp000315p.jpg