I made this yesterday. If you buy the Ikea Dioder system you get lots of extra cable's. So I made this converter cable to use ikea dioder leds bar powered from a computer
Here are the video instructions!
http://www.youtube.com/watch?v=OCyWCPp7cpc
My first try ever to make a instruction video i hope you like it!
If i get more cool idea's i make more video's like this
Friends of my did the Lackrack ikea hack!
http://wiki.eth-0.nl/index.php/LackRack