laura if you go onto the photomatix site....download the free trial.
Import your image as a single jpeg , the effect is not great but you will get an idea.
Secondly as its your work, once you have downloaded the software you can then go out and take 3 or 4 exposures with HDR in mind.
That building would look so good, its exactly the sort of lighting HDR was designed for.
also I have pm'd you a little treat