when i upgrade fourm i get this massage



Invalid SQL:
ALTER TABLE groupmessage
CHANGE groupid groupid INT UNSIGNED NOT NULL DEFAULT '0',
CHANGE postuserid postuserid INT UNSIGNED NOT NULL DEFAULT '0',
CHANGE postusername postusername VARCHAR(100) NOT NULL DEFAULT '',
CHANGE dateline dateline INT UNSIGNED NOT NULL DEFAULT '0',
CHANGE ipaddress ipaddress INT UNSIGNED NOT NULL DEFAULT '0';
MySQL Error : Table 'db name.groupmessage' doesn't exist
Error Number : 1146
Request Date : Thursday, May 7th 2009 @ 10:33:23 AM
Error Date : Thursday, May 7th 2009 @ 10:33:24 AM
Script : http://staff.kuwaitnet.net/vb3/insta...0b3.php?step=2

Referrer :
IP Address : 62.215.124.226
Username :
Classname : vB_Database
MySQL Version : 4.1.22-standard


now wat i do ?