1. Be professionally dressed
2. Be attentive, smile, show interest
3. Listen to the questions, take a breathe to think what they are asking, answer the question
4. If it is an open ended question, spin it to include your strenghts and experiences
5. Do your homework before hand (know the company, the position, day to day activities, goals)
6. Have a few questions jotted down that you can go to when at the end of the interview they let you ask them things (shows you what to know what it is all about)
7. Close at the end. Tell them you feel it would be a good fit and you want to move forward, what is the next step!
Remember, you are also using this interview to determine if this job is right fo you.
Good luck