To view or print PDF documents, the Adobe Acrobat Reader (version 4 or higher) must be installed on your system. If you click on any one of the PDF documents, and it asks if you want to associate the .pdf extension with a program on your computer, then Adobe Acrobat Reader is not yet installed on your computer. Click Cancel, and install the free Reader by clicking here. You will be asked where you want to save the Adobe Acrobat Reader file on your computer. Remember where you save it. Once the download is completed, use Windows Explorer to locate the file on the folder where it was saved. Double-click the file name. Follow on-screen instructions and Adobe Acrobat Reader will be installed on your system. You should now be able to access the PDF materials.