Cannot restore in a higher Mysql?

Hi, I backup my WP in a MySQL 4.1.14 and try to restore datas in a MySQL 4.0.21, but it pops up a message as:

————————————————–
#
# Table structure of table en_categories
#
CREATE TABLE en_categories (
cat_ID bigint( 20 ) NOT NULL AUTO_INCREMENT ,
cat_name varchar( 55 ) NOT NULL default ”,
category_nicename varchar( 200 ) NOT NULL default ”,
category_description longtext NOT NULL ,
category_parent int( 4 ) NOT NULL default ‘0’,
PRIMARY KEY ( cat_ID ) ,
KEY category_nicename ( category_nicename )
) ENGINE = MYISAM DEFAULT CHARSET = latin1
————————————————–

I’ve posted this in other WP forums and seems not just me got this, many other people had got this problem before. I ‘ve also searched the net and this site but can’t find the answers.

Does anyone know how to cope with this?