was that a replica captain's chair in the dealers room or was that the real thing flown out by paramount for the convention?
It was a replica, but the Star Trek Experience is a museum of sorts, with a lot of original props and materials from the show. I don't know what if any original materials went into the bridge construction, but because the attraction has very different logistics than a soundstage, it couldn't possibly have had the same construction plans and hold up to the tens of thousands of tourists sitting in the chairs and touching the panels that it has over the past 10 years.
Excruciating detail went into the recreation, often using still images from video or film where possible, and as well having inside knowledge from some set designer professionals. Many conduits for example were given Gene Roddenberry's favorite acronym "GNDN" (plus a number) which stands for "Goes Nowhere, Does Nothing."
The experience of being transported gives you a rush of air that seems to blow up from the floor itself (which has no holes in it) which is amazing in itself until you learn the secret of the effect from the behind-the-scenes tour, which also shows you the mechanism of the motion simulator and many other technical marvels all made especially for the Star Trek Experience. The month of 9 followed by a starting digit of 1 seems to be setting a pattern of being a not-so-fun date combination on my calendar these days. The attraction closes at the end of 9/1/2008.