BlueJohn wrote:

Has anyone here used Sketchup for semi-accurate modelling?

Not for accuracy, and I find it's sometimes easy to "do something wierd"
to your model and you need to backtrack to change it, but for a
non-autocad user it's certainly easier to grasp.

For sketching out a single room the Ikea kitchen planner can be quite
handy too
http://www.ikea.com/ms/en_GB/complet...oad/index.html