FireFox how to change print program ???

[Scott]

clemens at dwf.com wrote:

>Firefox has some nice options for printing, but I dont see how
>to change the print program itself (lpr).
>
>What I WANT to do is to get things to print double sided (duplex).
>
>What I have done in the past is to tell Mozilla that the print
>program was 'ipr' rather than 'lpr' and use this as a filter
>to affix 
>        << /Duplex false >> setpagedevice
>near the top of the postscript output.
>
>So, how do I change the print program (from lpr) in Firefox?
>-or-
>Is there a better way?
>
>  
>
    I'm no expert on this, but looking at the 'about:config' page yields 
a page full of print options, a few of which look like they may be what 
you are looking for!

HTH

Scott