At Keeward, we have a new Arduino powered Christmas decoration, iPhone controlled!
This is just a mashup we made with these two projects:
You will need:
Check what pin you can use with your ethernet Shield (I used #2 and #3).
Have a quick look at it here:
Here is the source code, in case this gives you ideas:
On GitHub: https://github.com/benjaminbellamy/WebLEDStripMobile