You may need to contact GTAC for the exact method, but there is a way to get PDFs out of NX for no charge. You need to set up your Print Admin to output to PostScript (.ps files). You will have to set this up as a completely separate printer, I believe. GTAC can assist with this...just tell them you want to know how to output to PostScript. They may ask for info on your printer/plotter, so be ready for those types of questions.
Once you have your Print Admin side working correctly, you will need to install Ghostscript (the actual .ps to PDF conversion software) and Ghostview (a viewer of PDF, PostScript and other print-related file formats). Both of these softwares are free of charge...just do a Google search to find the homepage.
The workflow will probably be something like this: Plot to .ps in NX, wait for NX Print to output a .ps file. After the .ps file is created, you can open the .ps file with Ghostview and convert to PDF. If you have Acrobat writer, you can save your NX .ps files to the same folder each time and have Adobe Distiller set up to watch that folder and automatically convert to PDF.
Hope this makes sense. You might also try searching this forum, as I'm positive other users have asked this same question before.
Tim Flater
Senior Designer
Enkei America, Inc.
Some people are like slinkies....they don't really have a purpose, but they still bring a smile to your face when you push them down the stairs.