I just purchased a davinci 2.0 and see no straight forward way with xyz ware to break up the .stl file to take advantage of the dual extruders . Is there a better software to accomplish this?
There is no simple way to do this. You have to have 2 stl files to even print with both extruders.
What I did was bought Simplify3d. It has a feature where it literally combines your 2 stl files into one based off where they where saved on the coordinates in you modeling software. Simplify3d is worth the money.