Great question and the first focus is not to hire a person that has the same talents as you. That's a killer in business partnerships...a recipe for failure. Next...they need to share your vision of where you want the company to go. And thirdly..why do they have to be a geek with some business knowledge. One of the most successful guys in the tech world is NB's Gerry Pond...his educational background? DEgree in psychology. Remember you are building a team...each one of you needs to compliment the other including leadership.