Known problems:   There are some known problems with older versions of the Netscape and Internet Explorer browsers on both the Mac and Windows platform that cause JavaScript error messages to pop-up and prevent the application from working properly. Please make sure that JavaScript is enabled. If this does not work, you may need to upgrade your browser to an updated version. Please follow the following links to upgrade your browser.   Upgrade browsers:   Follow these links to download a new version of Netscape Communicator (www.netscape.com/download/index.html) or Microsoft Internet Explorer (www.microsoft.com/windows/IE/).   Technical Support:   Contact Thomson Learning technical support for further assistance at 1-800-423-0563 or support@kdc.com.   Return to Chapters.