public function ProfileExtenderPrep() {
      $ProfileKeyData = $this->SQL->Select('m.Name')->Distinct()->From('UserMeta m')->Like('m.Name', 'Profile_%')->Get();
      $ExistingKeys = array_filter((array)explode(',', C('Plugins.ProfileExtender.ProfileFields', '')));
      foreach ($ProfileKeyData->Result() as $Key) {
         $Name = str_replace('Profile.', '', $Key->Name);
         if (!in_array($Name, $ExistingKeys)) {
            $ExistingKeys[] = $Name;
         }
      }
      if (count($ExistingKeys))
         SaveToConfig('Plugins.ProfileExtender.ProfileFields', implode(',', $ExistingKeys));
   }