I found the job on a web job site. Dataman hooked me up with the client interview, and wham! - I'm working for Dataman at the place I wanted to work.
The only advice I would offer is this: Based on my experience, the HR and management at Dataman are not idiots. They're very intelligent and very professional, AND very to-the-point. SO - Go in with honesty foremost, professionalism, friendliness, and please don't insult them by being arrogant in any way. They are very good employers and very smart, friendly folks.