One issue that hasn't been mentioned and perhaps should is that if you are interviewing referrals provided by an agency, the responses tend to get better over time. What I have seen is that the referring agency begins to anticipate the questions and "coaches up" candidates before they send them over. Is that an acceptable brain dump? I don't know but what I do know is that the open ended questions Tim proposed way back should help detect the difference between true knowledge and a memorization of the correct answer. -- Rumpi Gravenstein