Well, it looks better than my first map, which was a box covered in textures that came with the qED map editor, that said "qED" on them in big letters.
Pretty hard to see much in that screenshot, but the lighting from the sky looks good, could do with being lighter on the left side of the screen as I can't see anything. I think the engine/texture replacements are getting in the way of seeing whats going on. Looks like you're adding some nice detail to the computer section.
Would recommend downloading an engine such as Fitzquake if you haven't already.
http://www.celephais.net/board/view_thread.php?id=60831&start=871
happy mapping!