On Windows PDF export works at the printer driver level. You get (buy)
a special printer driver from Adobe and "print" to a PDF file. This way
any and all applications can generate PDF files. There are also a
number of free PDF print-drivers available as well. (I never use them
though... I just email .doc files.)


This is pretty close to how Linux does it too. Because all Linux
progams speak PS ghostscript does all the work translating into data the
printers understand. You can just print to file and translate to PDF
even if the application doesn't directly support it.

You can get ghostscript for Windows and I believe there is a way to set
it up to do what the Adobe printer thingy does. It is likely to be a
lot more work to set up, but also a lot cheaper.