Stupid Gnome(y) Question...

I'm attempting to add a program to the drop-down menu (in nautilus) for a specific filetype. In the help for the appropriate window, the entry describing "Command" says approximately "type whatever you would type from the Gnome terminal to invoke the command". However, there's no explanation for how to place the filename on that line in a particular position. Something like:

gnorpm -qp $file

OR (to clear up misunderstandings)

foo $file -baz bofo.for -bar bufu.for

Where $file was the file selected in Nautilus. I swear the help files for Nautilus are the worst on the frickin' planet.

Anyone got some insight?

Qvacks.