This is how I have it now:
 
	 
 
	/** 
	     * Registration::ProcessRegistration() 
	     * 
	     * @return 
	     */ 
	    protected function ProcessRegistration() 
	    { 
	     
	           // Yes, there was an error 
	        if(!$this->VerifyData()) { 
	            $this->ShowForm(); 
	            return; 
	        } 
	         
	        $vbv="VBV"; 
	         
	        $data = array( 
	            'firstname' => $this->post->firstname, 
	            'lastname' => $this->post->lastname, 
	            'email' => $this->post->email, 
	            'password' => $this->post->password1, 
	            'code' => $vbv, 
	            'location' => $this->post->location, 
	            'hub' => $this->post->hub, 
	            'confirm' => false 
	        ); 
	         
	     
	        if(CodonEvent::Dispatch('registration_precomplete', 'Registration', $_POST) == false) { 
	            return false; 
	        } 
	         
	                // Check email for known spammer 
	$url = 'http://www.stopforumspam.com/api?email='.$data['email'].'&ip='.$_SERVER['REMOTE_ADDR']; 
	$file = new CodonWebService(); 
	$contents = $file->get($url); 
	$response = simplexml_load_string($contents); 
	$reject = FALSE; 
	foreach($response->appears as $row) 
	{ 
	    if($row == 'yes'){$reject = TRUE;} 
	} 
	if($reject == TRUE){ 
	        $this->set('message', 'Your email or IP address appears on our spam database, we therefore assume 
	            you are a spammer and are rejecting your registration request. If you feel this is incorrect please contact us.'); 
	        $this->render('core_error.tpl'); 
	        //send email that spam registration rejected 
	        $email = 'your email here'; 
	        $sub = 'Spam Registration Rejected';; 
	        $message = 'Spam pilot registration rejected using email '.$data['email'].' and 
	            IP address '.$_SERVER['REMOTE_ADDR'].' on '.date('m/d/Y', time()).' at '.date('g:ia', time()); 
	        Util::SendEmail($email, $sub, $message); 
	return false; 
	} 
	//end spam check 
	        
 
	        $ret = RegistrationData::CheckUserEmail($data['email']);
 
	        if($ret) { 
	            $this->set('error', Lang::gs('email.inuse')); 
	            $this->render('registration_error.tpl'); 
	            return false; 
	        }