printing landscape document

Hi all, I have a document (PS) in landscape orientation and want to print it on my HP LJ6L, but no matter what I do I can't rotate the printout so that it comes out in portrait orientation on the paper. I use kprinter as print program, but changing the orientation in the properties dialog doesn't change anything. Just for completeliness: I print from inkscape, print command line in the program is configured as "| kprinter". I can print to a file, load it into gv, change the orientation there, but still it is printed in landscape and doesn't fit on the paper. Regards Mario