MySQL 5.0.51a-3ubuntu5.7 doesn't accept USING BTREE in CREATE TABLE.

ERROR 1064 (42000): You have an error in your SQL syntax; check the
manual that
corresponds to your MySQL server version for the right syntax to use
near 'USING
BTREE,
KEY `index_client_name` (`payer_name`) USING BTREE
) ENGINE=InnoD' at line 13

The instruction CREATE TABLE was generated by another MySQL.

CREATE TABLE `statement_positions` (
`statement_no` varchar(20) NOT NULL COMMENT 'Numer wyciagu',
`position_no` smallint(6) NOT NULL COMMENT 'Numer pozycji',
`announcement_year` smallint(4) DEFAULT NULL COMMENT 'Rok
ogloszenia',
`announcement_month` tinyint(2) DEFAULT NULL COMMENT 'Miesiac
ogloszenia',
`announcement_no` int(5) DEFAULT NULL COMMENT 'Numer ogloszenia',
`payer_name` varchar(61) DEFAULT NULL COMMENT 'Nazwa / imie nazwisko
klienta',

`title` varchar(20) NOT NULL COMMENT 'Tytul operacji',
`amount_paid` decimal(5,2) NOT NULL COMMENT 'Kwota operacji',
`payment_date` date NOT NULL COMMENT 'Data operacji',
PRIMARY KEY (`statement_no`,`position_no`),
KEY `index_statement_no` (`statement_no`),
KEY `index_year_month_announcement_no`
(`announcement_year`,`announcement_mont
h`,`announcement_no`) USING BTREE,
KEY `index_client_name` (`payer_name`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=latin2 COMMENT='Pozycje na wyciagu
bankowym';

Maybe diagnostics is not right?
Please help.