.pdf Printers and Readers
Create PDF files from any application by simply selecting the print command. It is easy to customize your PDF995 output: preview documents, combine files, change page orientation, add "Confidential" stamps, create PDF stationery, adjust image resolution, summarize documents, convert PDFs to several image file formats, create batch print jobs from Microsoft Office applications, and choose from several file-naming methods. With PDF995, you can easily encrypt or digitally sign your PDF documents. PDF995 uses Microsoft Cryptographic technologies to give you 128-bit DES encryption, offering a high level of protection for all your Internet communications, including legal documents and financial transactions. Signature995 employs Microsoft digital certificate technologies to create and validate digital signatures. 
You need to download and install all four files. Website: http://www.pdf995.com/download.html

Acrobat Reader
When downloading Acrobat Reader, I would uncheck the box next to McAfee Security Scan Plus offer. (FreeWare)  
Website: http://get.adobe.com/reader/