Why am I not able to open Portable Document Format (PDF) files?
To open PDF files (often indicated by the Adobe Acrobat icon), you must have the Adobe Acrobat Reader software installed on your computer. This software is available from Adobe Systems Incorporated. Some PDF files require the latest version of the Adobe Acrobat Reader. You can download the reader free from the Adobe Systems Inc. web site. For more information, visit http://www.adobe.com.