[SOLVED] how do I tweak the comments options?

It looks like its something in comment.php, but I don't know what to change 'required' to, or if there is a better way...

class comment_Core {
  static function get_add_form($item) {
    $form = new Forge("comments/create/{$item->id}", "", "post", array("id" => "g-comment-form"));
    $group = $form->group("add_comment")->label(t("Add comment"));
    $group->input("name")
      ->label(t("Name"))
      ->id("g-author")
      ->error_messages("required", t("You must enter a name for yourself"));
    $group->input("email")
      ->label(t("Email (hidden)"))
      ->id("g-email")
      ->error_messages("required", t("You must enter a valid email address"))
      ->error_messages("invalid", t("You must enter a valid email address"));
    $group->input("url")
      ->label(t("Website (hidden)"))
      ->id("g-url")
      ->error_messages("url", t("You must enter a valid url"));
    $group->textarea("text")
      ->label(t("Comment"))
      ->id("g-text")
      ->error_messages("required", t("You must enter a comment"));
    $group->hidden("item_id")->value($item->id);
    module::event("comment_add_form", $form);
    module::event("captcha_protect_form", $form);
    $group->submit("")->value(t("Add"))->class("ui-state-default ui-corner-all");

    return $form;
  }

BONUS QUESTION - I want recaptcha to work on comments and have recaptcha module enabled and working independently, and see the "captcha protect form" in the code above... Is that a different captcha? It's not working in the comments...

I did't get around to tweaking this right away but came back to it just now so just saying thanks to Dave. Thanks Dave! :o)