Add better description text for Public Client Key field.

authorizenetwebform.admin.inc

@@ -43,7 +43,7 @@ function authorizenetwebform_admin_settings() {
   $form['login']['authorizenetwebform_client_key'] = array(
     '#type' => 'textfield',
     '#title' => t('Public Client Key'),
-    '#description' => t('Enter your Authorize.Net Transaction Key.  It will not be displayed here once it is entered, for security purposes.  If you need to change it, please re-enter it.'),
+    '#description' => t('To generate the Client Key, log in to the Merchant Interface as an Administrator and navigate to Account > Settings > Security Settings > General Security Settings > Manage Public Client Key. If the Public Client Key does not yet exist, answer your security question to generate the key.'),
     '#default_value' => variable_get('authorizenetwebform_client_key', ''),
   );