Welcome to Flyertalk.
There are many existing threads about business credit cards in this forum, and also in the American Express, and Chase forums. I suggest that you start by reviewing this one:
http://www.flyertalk.com/forum/credi...solidated.html
This older thread will help you understand some of the differences between personal and business cards:
http://www.flyertalk.com/forum/credi...nal-cards.html