I haven't done this tutorial, but looks like it could get you started in Lightworks:
http://www.tutorialhero.com/click-48381-archicad`s_lightworks_engine_renders_designs_automatically.p...
Also, this dvd was where I learnt a lot about rendering in Lightworks:
http://www.tutorialhero.com/click-48390-professional_rendering_dvd.php
Dwight's book is considered by many to be the Bible of Lightworks rendering, you can find his details on this site.
Material creation, selecting the right material etc can make or break your render, spend some time experimenting with this.
And the Lightworks 'Window light' is important for any interior views.
There is a limit to how 'realistic' Lightworks can be in ArchiCAD, if you are looking for the ultimate in realistic renders, then look towards 3D Studio Max with V-Ray or C4D with V-Ray, but that's a whole other world of hurt which i've just dived into.
Sketch renders: just experiment with the different settings, different pen thicknesses etc until you achieve your desired look. Lately i've been using Kor-I-Nor with antialiasing at 4 and paper roughness at 10, things I learnt from other posts on this site. So it's also worth while spending some time searching thru these forums for VERY helpful hints and ideas, there's some very talented people in here.
Artlantis is also very common with people in here. I personally don't like the style it produces, but that's just me, I prefer the realism that V-Ray produces. Artlantis is apparently very fast.
Feel free to ask me any questions you may have,
mikelaidler@gmail.com and check out
http://mikelaidler.blogspot.com/ for some example images.
Hope this helps a little,
Mike
Edit 05.03.09: I have had another look at the Artlantis site's gallery, and in my opinion, there are now some images that look pretty good.
Noemi Balogh
