I recently realized that PDFCreator now fully supports Windows Vista. PDFCreator is probably the best free PDF-making software for Win32 systems. It not only outputs PDF, but also PNG, TIFF, JPEG, PS and a host of other formats. It acts as a Printer driver under Windows (98, Me, XP and Vista) so it is very easy to use it. What is really interesting is that it does not contain any crud like many other free PDF software and it features a print spooler so that you can combine printing from many programs into a single PDF file. This way, you can build a full document, with annexes, in a single pass.
I’ve been using PDFCreator for more than 4 years now, but I had to let it go for one year on my laptop because it had an integration issue with Vista. Since version 0.9.6, Vista support is there after a 150$ bounty got filled on the open-source project. I strongly recommend you try it ! After all, how can 20 million users be wrong ? 🙂