You might also consider bringing along a portfolio/dayplanner sort of thing. It's a great way to ensure you have a pen/paper just in case you wish to jot something down. Plus, it is also advisable to have a few intelligent, insightful questions written down to ask your interviewer. It can be quite difficult to recall all those things you intended to ask under the pressure of an interview. Plus, you appear more organized.
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'Old Man Dave'
KCOM, Class of '03