[gnome-print] custumize gnome_print_dialog

[roger <roger mondego com>]

hi
when i show the gnome_print_dialog
in the printer entry always appears just "lpr" and i using cups
with several printers so, every time a use want to print he need to add 
   "-P theprinter".
is there a way to custumize de dialog so he adds the "-P " command to a 
default printer for that user?
everything else works fine
thanx
  roger