You may need to install ghostscript if it is not installed on your
platform by default. If you install the executables to somewhere in your
PATH, everything should work fine.

Google will find the ghostscript packages for you.

It is unnecessary to send questions to both mailing lists.

I strongly recommend Eric Raymond and Rick Moen's "How To Ask Questions
The Smart Way" article at:

http://www.catb.org/~esr/faqs/smart-questions.html

stuart