Use the pen_table_file option in config. Specify the path of the file (don't forget the extension, like C:\proj\table.pnt). Then, in that point have a file called table.pnt that might look like this:
----------------------------------------------------------------
! This is a pen table file. See Interface Guide under pen mapping.
!use for plotters
! Pen 1 = white entities (object lines)
! Pen 2 = yellow entities (text, dimensions, cross hatching)
! Pen 3 = gray entities (hidden lines)
! Pen 4 = red entities (can use for drawing border if you change the
! entity color to red in the format file)
! Pen 5 = green entities (sheetmetal)
! Pen 6 = cyan entities (section)
! Pen 7 = dark gray entities (dimmed)
! Pen 8 = blue entities (spline surface grid)
pen 1 thickness 0.009 in
PEN 2 THICKNESS 0.003 IN
PEN 3 thickness 0.003 in
pen 4 thickness 0.005 in
pen 5 thickness 0.010 in
pen 6 thickness 0.010 in
pen 7 thickness 0.002 in
pen 8 thickness 0.005 in
------------------------------------------------
Be aware of the units and again, extension. This works if you are printing in ps (Ad, too.
Dan