For reading and printing PDF documents you need Adobe Reader of company Adobe. If Adobe Reader has not been installed in your system yet, you can download this program free of charge from the
Adobe Reader Download
You will need an update of your Windows HTML-Help-Engine for viewing compiled HTML-Helps (files with extension *.chm), if you have not installed one of the following products: Microsoft Office 2000, Windows 2000, Internet Explorer 4.0 or later.