How to apply shaders on many surfaces quickly? Please help.

hello. I imported a model from sketchup. it´s a bigger project, so there are lots of different groups and meshes. i´d like to apply toon shader on all of them but i dont wanna click every cube and every wall and do it like that there must som speedup method. please help. Thanks

Sounds like a task for the AssetPostProcessor:

http://unity3d.com/support/documentation/ScriptReference/AssetPostprocessor.OnPostprocessModel.html

Then get the renderer, it’s list of materials, and set shaders for them.