In article , says...

Plenty of free PDF converters around, e.g. PDFCreator for Windows
http://www.pdfforge.org/. It installs as a printer driver but
outputs to a file instead of a printer so you can get PDF output from
any application that can print.


I have used PDF995 for some time, and although it has two annoying
popups trying to persuade you to pay for the popup-free version, it
works well. It also produces smaller files than PDFCreator. YMMV of
course.

Not tried pdfforge, but freepdf (was freepdfxp) served me well and works
in XP & 7, needs ghostscript installed too. The pdf is produced as an
image so you cannot search which can be a pain.

http://freepdfxp.de/

Or use openoffice which will export to pdf.