An icon, Donald J. Trump is the very definition of the American success story. The star of The Apprentice and developer of some of the planet's most prestigious real estate, he's been on the bottom and risen to become one of the world's wealthiest men.   Bill Zanker started with $5,000 and created a $5 million a year company. That was before he met Donald Trump. Thirty months later, after Zanker learned to think BIG himself. He is now generating over $100 million a year in sales—an....