Here's the recipe: 1. If you know people in that department, ask them what the interview dress code is. 2. If you don't know anyone, walk over or call the department where the interview will be held. Ask the receptionist/secretary/administrative assistant or even the interviewer him/herself if they're the person setting up the interviews, what the dress code is. 3. Dress accordingly using the advise given above. 4. Shake and serve. Good luck! Honestly I think you'd be better off just wearing a suit, but if you're going to use this method, talking to an administrative assistant would probably be your best bet. If i was going to intereview someone and they called and asked me what the dress code was, they'd get big "no clue" points in my book.