I did some playing with Google SketchUp 6 and got a lot of Hirst molds that I got from the google 3d warehouse.
Check out the result in the attachments and let me know what you think!
It took me less than 2 minutes to create a room as all 3D models are already done and prepared to be used in building stuff like this..
I use maps like these for my Play By Post games. You can create virtually anything (there are a lot of free models online) and export the images with nice effects that really deepen the atmosphere of dungeons and gaming in general..