How to convert PDF to Gerber for PCB layout?
It seemed to work OK on the PDF provided in the example - the Gerbers looked OK when I imported them into GC-Prevue. However, when I created a PDF file from a PCB designed in the Pulsonix software I use, and converted it with pdf2gerb.pl, the resultant Gerber file wouldn't import into GC-Prevue.

There are some PCB manufacturers which can work from artwork supplied as Postscript files. You could convert the PDF file to Postscript by printing it to a file, using a Postscript driver.