I'm sure you have had to open a PDF file at one time or another. And you most likely have the Adobe Acrobat Reader installed on your computer. Acrobat Reader is a free program that you can use to open PDF (Portable Document Format) files. Think of a PDF as a snapshot of anything that you can print to a printer but printed to a file instead. You cannot editthese files unless you have the proper software and they can even be protected so you can't change or even print them.
But how do you make a PDF file? If you have the Adobe Acrobat Writer and about $500 then you can do it that way. Or if you want to do it for free then you can use pdf955. This is free software that will let you make PDF files the same was as the expensive Adobe software. Keep in mind that Adobe Acrobat does more than make PDFs but if that's all you need then pdf955 will do the job.
Quote from their website:
Pdf995 makes it easy and affordable to create professional-quality documents in the popular PDF file format. Its easy-to-use interface helps you to create PDF files by simply selecting the "print" command from any application, creating documents which can be viewed on any computer with a PDF viewer. Pdf995 supports network file saving, fast user switching on XP, Citrix/Terminal Server, custom page sizes and large format printing. Pdf995 is a printer driver that works with any Postscript to PDF converter. The pdf995 printer driver and a free Converter are available for easy download.
You can get the software and instructions on their website.