an even better gui is mysqlyog available at this address
http://www.webyog.com/sqlyog/download2.php
In order to add the items table using mysqlyog you'd drop the table then just browse to the items.sql file from the tools- run batch file and run it.
In mysqlfront I think there's a query analyzer built in so you'd run the items.sql from there.
These are just ways of doing what Trumpcard explained though a gui and it has been my experience that at times the mysql gui's don't run sql scripts correctly, so caveat emptor.