If you have a Radio Shack near by, ask for cheap speaker wire.
You don't need thick, or expensive wire for that particular receiver.
It's power is about 35 watts per chan, if my memory is correct, and your CS 40 speakers will work well with that receiver.
AWG-16 wire would work well in that situation.
Hook the speaker wires to the terminals on the back of the speaker box, being careful to observe the polarity (+ Red or - Black) of the connections.
Just match the color on the end at the speaker with the same color on the same terminal on the stereo.
Good Luck