Hi garstan,
Thanks. It was just an experiment really. Saw an image of an office that was going to be built near where I worked. I thought - "TFP can do that" (and I bet a lot cheaper than what the developer would have paid!). So I tried it and did it on the train, to and from work, in a week.
Huge photoboard images were used for the background and to get the reflections in the windows.
Allan