@unknownuser said:

May be worth you taking a look at this thread:

http://www.sketchucation.com/forums/scf/viewtopic.php?f=20&t=723

the link was useful,but it still had image as background , while i actually wanted to start with autocad dwg as a base file.

I didn't want to turn off the layers, i want them as reference to draw on top of them.

when i draw with a pencil tool ,it automatically snaps to lines of imported autocad layers.Hence, I am not able to draw accurately .

Tut is great.but i am a beginer.How to trace in sketchup?

I am facing problems creating 3d overlayered on top of layers imported from autocad .I am creating 3d on new layers ,not even on autocad layers. Where am i going wrong ?Any help ?