Xcode 4.3: how to create a binding associated with a view controller

Sorry, I'm pretty new to xcode with a pretty big project. I am updating xcode to 4.3. I have a project (which does not use a storyboard) and I need to add a view controller with a nib file.

Before the upgrade, I made a File → Ne File → Cocoa Objective-C subclass and xcode created for me m / h and their nib file. Now that this option disappears, how to add a view controller?

I created an Objective-C class and, separately, a nib file, but how can I link H / m files to nib ??

How can m-call be nib ??

Please help me? The project is really big, and I can rewrite the code using the storyboard option! Thanks