The first meeting with your new staff gives you an opportunity to introduce yourself to the group and for you to get an introduction to them.  You will also get a sense of how they interact as a group.  At the meeting you can give an overview of your management style and your immediate objectives for the department.  In addition, you want to try to get honest feedback as to the perceived strengths and weaknesses, as the staff see them, as well as what they see as their recent accomplishments.