So i decided to attempt to import my save of my old singleplayer treefort level over and it worked.
im
now running a small server with these things going. 74.244.50.200:25565
is the server, here are the things we have going on. Im calling the map Orothimar. (pictures next of things in the map i built in singleplayer)

http://dl.dropbox.com/u/1324496/Cactusandreedsfarm.jpg

http://dl.dropbox.com/u/1324496/crazyterrain.jpg

http://dl.dropbox.com/u/1324496/shipanddock.jpg

http://dl.dropbox.com/u/1324496/treehouseside.jpg

(also
the texture pack im using is a color modified version. its a
combination of Brown&Bloom, Mr_Big90's pack, and some SMP textures.
among others i cant remember i bet. i dont take credit for making this.
its all those guys skill. Full Modified Texture Pack Download: http://dl.dropbox.com/u/1324496/Minecraft%20Resources.zip )