Portable Document Format (PDF) is a file format created by Adobe Systems in 1993 for document exchange. It has become a world wide standard but Microsoft software does not allow for the creation of a PDF. Here are several ways to convert a Microsoft Word Document to a PDF. There is no need to buy software to do the conversion.
PrimoPDF converts just about any file type to a PDF, using the print command from the source program the file was created in. http://www.primopdf.com/index.aspx
Use the free open source program Open Office Writer to open the Word Document. Click on the PDF button on the options bar to save it as a PDF. The entire Office equivalent suite is available for download free of charge at http://www.openoffice.org/