By using mySQL_ExecQuery you can perform any legal query you want as though you were entering it directly into your MySQL client. eg.
mySQL_ExecQuery("INSERT INTO `players` (`name`) VALUES ('new_char')");
or
mySQL_ExecQuery("UPDATE `players` SET `passwd`='new_passwd' WHERE `name`='new_char'");
or
mySQL_ExecQuery("DELETE FROM `players` WHERE `name`='new_char'");
etc., etc.
This is an awesome contribution!
Andy