Embedded Fonts

Can someone help me?  I obviously have not found the secret to embedding fonts in the pdf files I create.  When I click on properties -> Fonts tab, I see all the fonts listed, but the printer tells me that there are 5 fonts not embedded.  The 5 mentioned are all listed under the Fonts tab, but the major difference (as far as I can tell) is that these are not marked as Built In and all the rest are.  Any help will be appreciated.