Casper, Попробуй так:
DROP TABLE IF EXISTS `inf`;
CREATE TABLE `inf` (
`id` int( 11 ) NOT NULL
AUTO_INCREMENT ,
`us` int( 50 ) NOT
NULL ,
`tem` varchar( 50 )
NOT NULL ,
`time` varchar( 50 )
NOT NULL ,
`kol` int( 11 ) NOT
NULL default '1',
`idpost` int( 11 ) NOT
NULL ,
PRIMARY KEY ( `id` )
) ENGINE = MYISAM
DEFAULT CHARSET =
utf8
AUTO_INCREMENT =1;