haven't u heard phpMyAdmin (
http://www.phpmyadmin.net ) ?
install this program on ur localhost; on ur WWW server, they should be providing this, if not don't worry:
create a simple html form in a .php page ( e.g.,
http://www.mysite/admin/sql.php )and call mysql_query($query) yourself.
note that populating a MySQL db is much more easier than that with MS Access.