I needed to convert some files to PDF format today. While this is possible in Office 2007 products with a free add-in it isn't an option in other applications. I have an XPS printer and a OneNote writer but no way to produce a PDF. There are a number of solutions available and in the past I've had problems with ones which looked promising but that don't support Windows Vista. I stumbled across doPDF today and was very pleasantly surprised. It's freeware, supports Windows Vista and, like all software should, it just works. I rarely need to produce PDF files but now I know I have a solution I can rely upon.