ALTER TABLE `$table_settings` ADD `captcha_status` SET( 'on', 'off' ) NOT NULL DEFAULT 'on';
ALTER TABLE `$table_settings` ADD `captcha_reg_status` SET( 'on', 'off' ) NOT NULL DEFAULT 'on';
ALTER TABLE `$table_settings` ADD `captcha_post_status` SET( 'on', 'off' ) NOT NULL DEFAULT 'on';
ALTER TABLE `$table_settings` ADD `captcha_code_charset` VARCHAR( 128 ) NOT NULL DEFAULT 'A-Z';
ALTER TABLE `$table_settings` ADD `captcha_code_length` INT( 2 ) NOT NULL DEFAULT '8';
ALTER TABLE `$table_settings` ADD `captcha_code_casesensitive` SET( 'on', 'off' ) NOT NULL DEFAULT 'off';
ALTER TABLE `$table_settings` ADD `captcha_code_shadow` SET( 'on', 'off' ) NOT NULL DEFAULT 'off';
ALTER TABLE `$table_settings` ADD `captcha_image_type` VARCHAR( 4 ) NOT NULL DEFAULT 'png';
ALTER TABLE `$table_settings` ADD `captcha_image_width` INT( 3 ) NOT NULL DEFAULT '250';
ALTER TABLE `$table_settings` ADD `captcha_image_height` INT( 3 ) NOT NULL DEFAULT '50';
ALTER TABLE `$table_settings` ADD `captcha_image_bg` VARCHAR( 128 ) NOT NULL;
ALTER TABLE `$table_settings` ADD `captcha_image_dots` INT( 3 ) NOT NULL DEFAULT '0';
ALTER TABLE `$table_settings` ADD `captcha_image_lines` INT( 2 ) NOT NULL DEFAULT '70';
ALTER TABLE `$table_settings` ADD `captcha_image_fonts` VARCHAR( 128 ) NOT NULL DEFAULT '';
ALTER TABLE `$table_settings` ADD `captcha_image_minfont` INT( 2 ) NOT NULL DEFAULT '16';
ALTER TABLE `$table_settings` ADD `captcha_image_maxfont` INT( 2 ) NOT NULL DEFAULT '25';
ALTER TABLE `$table_settings` ADD `captcha_image_color` SET( 'on', 'off' ) NOT NULL DEFAULT 'off';

CREATE TABLE `$table_captchaimages` (
  `imagehash` varchar(32) NOT NULL default '',
  `imagestring` varchar(12) NOT NULL default '',
  `dateline` int(10) NOT NULL default '0',
  KEY `dateline` (`dateline`)
) TYPE=MyISAM;