I suspect this has something to do with the Personal LaserWriter not
being a postscript printer. Can someone confirm this, or give me a
solution please?

Yes, that'd be it.

I believe it's possible to use CUPS (OS X's new printer architecture) along with Ghostscript under OS X to render postscript files to formats suitable for non-postscript printers, you may be able to go that route.

You could try

<http://www.macosxhints.com/article.php?story=20011026174642622>
<http://www.macosxhints.com/article.php?story=20021011055322263>

Good luck,
Shay
--
=========================== Shay Telfer ================================
Perth, Western Australia Technomancer It must be bunnies!
Opinions for hire [POQ]
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