assembly .stl keeping the assemlby

I have a vendor that needs an .STL file of an assembly, but wants the .STL to show each of the assembly parts, not just a single fused parts with many facets.


I am in Wildfire 2.0 andwith 'save a copy', .stl there are options to include parts or exclude parts, but in either case the result is the same: a single .STL part.


Please let me know if there is a way to create the .stl and maintain all of the discrete parts.


Thanks


joe