Animations

is it possible to make mesh models transform in a animation heres my model, i want to change his expressions like so he smiles and stuff im new to blender and 3d apps in general, heres my head

http://img2.exs.cx/img2/6316/head.th.jpg

Search RVK

Check out the documentation at blender.org

http://www.blender.org/modules/documentation/htmlI/x6902.html