You need:
IKEA EKBY VALTER bracket
IKEA HEMMA cord set
drill. screws, plug connector
And enjoy!
Piece of advice: if you are going to use it above your kids reading nook, use a LED bulb, those don't get hot, if your kid decides he wants to touch it, as mine does.
Linking to: Marvelously Messy, Sumo's Sweet Stuff
Whipperberry