problem with scaling

[svetter at ameritech.net]

  I am trying to use the scaling or the natural-scaling options without success.  The page that is being printed comes out without any scaling at all.  The command I've tried is: lpr -o 'landscape natural-scaling=50' testpage  and I've also tried lpr -o landscape scaling=50 testpage
The printer is a Brother HL-1650
And the OS that I am using is Suse 9.0

Thanks!

Scott