-.- Read the thread you linked to: "Planes for Beta 1.4 is out (No SMP yet)" That mod requires you to have more models/code on your client, so it's not currently possible to have an SMP mod for this.
Actually SMP is possible with this since there is a working version of it for 1.3_01, so the 1.4 version should be out soon. The problem is this mod is not compatible with bukkit. I second this request, that mod looks awesome
yes, there is someone who is on this. And I am glad he is. However, it would be nice if some people search their idea before they post the same idea again and again. Thanks *never meant to be mean, pm me if you think if you think i were.*