Create Foam Insert From Assembly

I have an assembly with some fragile parts and we need toship it somewhere. We've found a vendor that will take solidworksfiles and make foam inserts out of them!!! Anyways I have theassembly layout in the way that we would like to case it and packit but I'm not quite sure how or if I can do what I want. Any helpwould be greatly appreciated.

Here's the deal: I have the assembly all layed out and what I'dlike to do is create a part or feature at the assembly level anduse some function to have it automatically remove material forwhere the parts are in the layout. Is this possible? If so is therea way to increase or decrease how much material is taken awayaround the parts in the layout?

Please help if anyone has any ideas???!!!???SolidworksAssemblies