Inserting 3D files in Acrobat

I purchased Acrobat Standard yesterday at the recommendation of the people in Staples.  I want to insert STL and OBJ files of solids to view in 3D PDFs and was told that all Acrobat options had this ability.  When I downloaded and installed Acrobat Standard, I could not see the "Rich Media" tool on the list.  Was I mis-informed by the sales clerk?  Do I, or even CAN I get an upgrade to what is essentially useless to me without the Tool that I wanted?