iOS SDK: No Classes or Resources folder?

I'm developing my first iOS app, and everything I read says that each project should have a Classes and Resources folder.

I've tried creating each type of project (view-based, window-based, etc) and I never have the file structure it seems I should. Please help!

PS: I'm u开发者_如何转开发sing XCode 4.0.1

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That was the convention the Xcode 3 templates used, apparently this has changed for the Xcode 4 templates and they are laid out differently. It doesn't matter, Xcode still knows where everything is.