Really depends so much on the two systems. But if you have an audio out or an earphone jack, this should be a stereo mini. Look at the back of your stereo and see if there are any empty input slots these (not phono, preferable AUX)will be the same as the jack on the laptop if cheap, but more likely will be devided into a left and right channel. You would then need a cable that will split the stereo into L and R channels Probably a slightly larger RCA jack. Look at the jacks on other inputs.
Go to a Radio shack store or on-line and search for proper parts. Should be easy. When my big CD player broke I used that to hook up a portable.