PostScript is the industry standard for sending documents to high-resolution printers.
Note: Ghostscript must be installed on your workstation or server to import PostScript!
Ghostscript is freely available and distributed under the GNU General Public License. If you do not have Ghostscript installed you may download it from the following websites (or from other available mirrors):
http://www.cs.wisc.edu/~ghost/doc/gnu/index.htm
http://www.ghostscript.com/