Han,
Nothing to it. First, you'll need an effects cable (also called in/out cable) which is available from most music stores. One end of the cable has a 1/4-inch stereo male plug. This splits into two 1/4-inch male mono connectors, which you will plug into the mixer output. At Radio Shack, you can pick up a 6-foot headphone extension that has a 1/4-inch stereo female jack at one end, and a 1/8-inch stero male plug at the other end.
Nothing to it!
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)