Why can't I see the table of contents in the help file?

Why can't I see the table of contents in the help file?

Due to a bug in Microsoft Internet Explorer version 6.0, a critical update is required to display the Help file. This critical update applies to Internet Explorer version 6.0.2600.0000, as well as other 6.0 versions of Internet Explorer. The critical update is numbered 811630 and is available from Microsoft here: http://support.microsoft.com/default.aspx?scid=kb;en-us;822989