Adding a Mod, need help 3.0.3

[Shizuko]

I need help adding a mod or plugin that will chop trees down when i take out the bottom block. I dont need leaves taken down too, just wood. How would i go about acquiring a mod? How would I install it onto my server for my friends and I?

[sct]

http://dev.bukkit.org/server-mods/choptree2/

Enjoy.