Quark 8.1 I think is the first version that includes Trim Box and Bleed box info when Printing postcript.
v7 and 8.0 will include the info if Export to PDF is used to create the postscript.
v6 and earlier rely on Distiller recognizing quark's trim marks and working it out.
There are a number of third party Plug-Ins for Distiller that can help it out. I think also there were some Quark XTensions to achieve what you are looking for.
... there was the puzzle of why the sun came out during the day, instead of at night when the light would come in useful.
Terry Pratchet