import CAD files

[tcalvin48]

Hello,
I am new here, this is my first post.  I don't use AnyRail yet, but am curious about its compatibility with other CAD programs.  I have been an AutoCAD user for years and have always done track plans using it.  However, I don't do 3D AutoCAD which is what makes me interested in AnyRail.  I have looked at some of the 3D tutorials for AnyRail and must say it is very impressive.  The easement option is also a real plus.  So to venture forth:
Can AutoCAD files be imported to AnyRail or do I have to start all over? 
I see that flextrack can be used, can you make your own libraries?   I make my own turnouts and would like to be free to draw them myself for use in AnyRail.
Is using S gauge flex track a problem for AnyRail?
Thanks in advance,
Tom Stoltz
in Maine