Procedure: Submit documents to FZ authority, pay money, and wait
Cost: about 20k dhs (a guess)
Time: week or two after all documents submitted
Documents: passport, business plan, photos, medical test results
All markets can use your services, not just UAE or GCC. It's not a licence to operate in other GCC countries thought. If that makes sense. You're supposed to be operating out of Dubai Media City.
http://www.dubaifaqs.com/dubai-media-city.php