I'm new to BobCad and I have a bunch of AutoCad 2000 files I'd like to transfer to BobCad V20. I have all the books and videos. I follow the directions and I get " cannot open file". The book says to explode into points, arcs, and lines. But splines cannot be exploded in AutoCad. Can anyone explain how to get files with splines into BobCad for me??