Remember...

Understand behaviors, which are personality traits and characteristics of a person that determines the success of the individual in his/her work. Behaviors reflect what a person does and how they do it.
Explore competencies: the skills, technical knowledge, and experience an individual has demonstrated.
Be organized and prepared – don't wing it. You are representing your company to every candidate you interview, so make a good impression.
Specific examples yield the best insights, so watch and listen for details and credible stories from the candidate’s past.