This web page points to a zip file which contains Ghostview 8.00 for windows, redmon 1.7, and a document describing how to set them up as a printer which saves to PDF format.
There is a real nice piece of freeware called PDFCreator which does all this with a normal install. You just have to be careful during the install if you want to avoid the various toolbars and other goodies that it wants to add which have nothing to do with printing PDF.
These tools are all freely available on the internet. I am just collecting them all in one place for convenience.