I'm getting an error

MySQL - 4.3.1
phpMyAdmin - 2.6.1

SQL-query:

ALTER TABLE nuke_autonews ADD topic2 int( 3 ) NOT NULL default '1',
ALTER TABLE nuke_bbforums ADD forum_topics2 mediumint( 8 ) unsigned NOT NULL default '0',
INSERT INTO nuke_bbconfig
VALUES (
'topics2_per_page', '50'
)

MySQL said: Documentation
#1064 - 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 'TABLE nuke_bbforums ADD forum_topics2 mediumint(8) unsigned NOT