1. Find out as much as you can about the company: How is it performing?
2. Step2
   Study the description of the job for which you have applied.
3. Take an inventory of your strengths and practice discussing how they complement the requirements of the job.
4. Make a winning first impression at the interview.
5. Look for common ground between you and the interviewer to establish a positive rapport and to stand out from the crowd.
6. Turn what could be seen as potential weaknesses into strengths.
7. Use specific examples to describe why you're a perfect match for the job.
8. Demonstrate that you are a problem-solver.
9. Make the interviewer feel good about hiring you.
10. Follow up with a thank-you note that reiterates your qualifications and mentions specific topics covered in the interview to trigger the person's memory about your winning interview.

via ehow