"Inseperable" sub-assemblies?

I just recently started using SolidWorks, so bear with me.  In Inventor, I could change a subassembly BOM reference to be "inseperable", so in the top level I could do a parts onlly BOM, but the sub-assembly would not be broken up.  Is there a way to do this in SolidWorks?

Jason L.

SolidWorks Premium 2011

SolidworksAssemblies