CREATE TABLE `user_settings` (
  `userid` int(11) unsigned NOT NULL,
  `name` varchar(50) NOT NULL,
  `type` BOOL NOT NULL,
  `value_int` int(10) DEFAULT NULL,
  `value_str` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`userid`, `name`)
);

#`userid`: The user that this setting applies to
#`name`: The name of the setting
#`type`: Tells you the set value is stored in `value_int` or `value_str`, (1 or 0, respectively)
#`value_int`: Contains the value of the setting if type is 1
#`value_str`: Contains the value of the setting if type is 0

#Example of inserting settings
#INSERT INTO user_settings (user_id, name, type, value_int) VALUES (1, 'fontsize', 1, 18) ON DUPLICATE KEY UPDATE value_int=65;
#INSERT INTO user_settings (user_id, name, type, value_str) VALUES (1, 'fontcolor', 0, 'red') ON DUPLICATE KEY UPDATE value_str='red';