what you might do is assign material regions to some of the faces in Wings, then use some 'window' mats in Bryce. Alas, there's not much of what looks that good, unless you use them on the closest buildings..I've also made edges 'hard' in Wings, then smoothed the interior of a face to get smaller and smaller (and larger and larger polycounts..:|) windows. A touch of 'inset', texture assign as I mentioned above, and then maybe a 'luminous' mat (I use 2, called Yellow Passion and Plasma, for portholes, etc). Hope this helps..
Also, a month or 2 back, someone posted Kevin Cappis' tutorials for citybuilding..might do a search on that. He's the 'Sim City King' of city building..;)
but hey, the above stuff is already better than what I do..;)

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)