When choosing an existing file for saving, it is possible to append to
the file.

Script ps2djvu4kdeprint.sh should be put somewhere in the path (e.g. ~/bin).

Parameters of the script ps2djvu4kdeprint.sh:

  -r<resolution> -c<1 or 0> <ps file name>

  1 means 'print in color', 0 means 'black&white printing'

It can be used as a stand-alone tool for conversion of ps files to djvu.

For Kdeprint setting one can add to

~/.kde/share/apps/kdeprint/specials.desktop

a new printer section with parameters:

  Command=ps2djvu

  Comment=Local file

  Description=Print to Djvu file

  File=0

  Icon=fileprint

  Name=Print to file (Djvu)

and put the files ps2djvu.desktop and ps2djvu.xml to the directory
~/.kde/share/apps/kdeprint/filters

Then it should be possible to choose the pseudo-printer 'Print to Djvu file'
and change its options (resolution, color) in kdeprint dialog.