Easiest way is to get a hold of a couple PCB boards like the ones I showed earlier in the thread.
Here's a quick sketch of how they're wired up from a search I did. I did not make this and I haven't wired mine up yet so proceed with a bit of caution. The LED's on the sketch are backwards, but you get the idea. I know Scubasteve has some wired up and running, maybe he'll chime in here later. Depending on how many LDD's you'd need, I do have a few spare you an get off me for what I paid for them.
