Download and unzip the file into the (active / default) site templates folder (e.g.
/htdocs/joomla/templates/rhuk_solarflare_ii). If you decide to unzip to a subfolder (e.g.
/htdocs/joomla/templates/rhuk_solarflare_ii/topnav) than you need to give that name in the parameters of your extended menu module (e.g. set
Template Name to "
topnav/menu.html").
In addition you need to use the also included stylesheet (
menu.css). For this you may edit the
index.php of the template, use an import within your
template_css.css or just copy and past the contents of the
menu.css. (Joomla/Mambo does not provide a generic way yet)
Note: the menu templates are overwriting the class suffix (and maybe other parameters) of the menu module using the
menu.ini.