Thank you Anssi!
Your answer actually helped me alot. I hadn't realized that converting the file to a dxf/dwg actually creates straight lines to make up the curves. If I just add a bunch of nodes into every curve and then export it (or create my vector curves using straight lines) then the results are actually really clean and quite accurate when importing them into SU. This is one of those little things that I wish i had known all along and will help me a thousand times in the future. BIG HELP. Thanks again.
scott