I have C7Pro so the UI differences may apply to which version you are using.
The more smoothing you want the bigger the file sizes---you will eventually have to compromise.
(You can decimate those big file size importations--see under the Model tab))

How well have you studied the Help Manual?
Have you studied all the FREE tutes--many are the free introductions to the Pay for version---from Marks site?

Brian

bwtr