Adobe make 'Adobe Reader' freely available, but charge for Adobe Acrobat (Writer). There is a free alternative for creating simple PDFs - CutePDF.
Cute PDF Writer is a 'basic but free' PDF Writer
There are a number of free utilities available on the Internet that create basic PDF files for free. We have tested a number of these and found that 'Cute PDF Writer' is the best available.
The method the free PDF creators use is to create a 'printer driver' that, instead of printing to a printer, prints your file to a PDF document.
How to: Install Cute PDF Writer
How to: Use Cute PDF Writer