This may be a good thread to start with regards to forming the overall shape of the wall -
http://archicad-talk.graphisoft.com/viewtopic.php?t=26785
All the mouldings will have to be done separately with the complex profile tool.
Ralphs
Objective tool would be particularly useful to have if you do that type of building often.
You will also have to look into making custom shaped windows too. Do a search for 'wallhole' which will bring up a number of threads.