@remus said:
Welcome, and no you shouldnt have to trace the entire thing.
If you right click the imported stuff and click explode it should give you a load of stuff you can use in SU. From here you can either fill in the faces manually (by tracing a few lines) or use the makefaces ruby from smustard. Either way should work.
Would that be an explode in autocad before inporting or explode in sketchup after importing? If in sketchup, where is that command?