Open skins/_html_footer.inc.php and change the following

$Plugins->trigger_event('SkinEndHtmlBody');

switch( true )
{
	case !is_logged_in():			// Skip logged in users
	case $Hit->IP == '127.0.0.1':	// Skip IP
		break;
	
	default:
		$Hit->log();				// Log the hit on this page	
}
debug_info(); // output debug info if requested

Good luck

Thanx a million !