1st create ONE table (not four) as follows:-
CREATE TABLE statinfo (
browser text NOT NULL,
date text NOT NULL,
host text NOT NULL,
referer text NOT NULL
);
Then in the php3 file use the following code to populate it.
$connection = mysql_connect("localhost","login_name","password") or die ("Unable to connect to MySQL server.");
$db = mysql_select_db(YOUR_DATABASE_NAME) or die ("Unable to select requested database");
$browser = $HTTP_USER_AGENT;
$date = date("F jS Y, h:iA");
if ($REMOTE_HOST == "") {$host = $REMOTE_ADDR;}
else {$host = $REMOTE_HOST;}
if( empty( $HTTP_REFERER ) or '' == $HTTP_REFERER ) {$HTTP_REFERER = 'No Referer';}
mysql_query ("INSERT INTO statinfo (browser, date, host, referer) VALUES ('$browser','$date','$host','$HTTP_REFERER' )");
mysql_close($connection);
?>