Getting one is as simple as applying for a consumer card. You should have no trouble getting a business card if you personal credit score is good. Just click on the small business section on any credit card site. citicards.com bankofamerica.com etc.
Compare cards here:
http://cardoffers.com/introCreditCar...egory=Business
Even if you put down $0 for revenue/sales on the application you will still get one.