Ivy Generator & Blender tutorial. Explains how to use the Ivy Generator and how achieve correct material creation with Blender, to give correct shadows:-
You will need the texture pack from the Ivy Generator website.
7zip version.
http://www.4shared.com/file/13448584/ce62d8b5/Ivy_to_Blender.html
Zip version.
http://www.4shared.com/file/13448604/4fdece4/Ivy_to_Blender.html
Blender internal:-
Any questions, please ask here.
Hope this is useful.
Sonix.