How use PAY PER CLICK CONFIGURATION SECTION, i try the example code, but not show keywods at page. Only show a refereals number, but not a name and a clks for them.

my link like:
myweb.com/index.php?ref=googlead&keyw=logo

The ppc configuration like this
$ppc = array ('googlead' => array ('title' => 'Google Adwords', 'keywords' => 'shortcode1:friendlyterm1,shortcode1:friendlyterm2'));

Reading documtent######## i can't undesrtand how to configure $ppc.

Thanks