wp-useronline sql problem

I’m trying to install wp-useronline from http://www.lesterchan.net/portfolio/programming.php .

I followed the instructions, and when I went to install onlineuser-install.php I get an error about [].

$sql[] = “CREATE TABLE $wpdb->useronline (“.

Now I have:

$sql = “CREATE TABLE $wpdb->useronline (“.

I removed it, now I get this error:
Warning: Invalid argument supplied for foreach() in /home/…./useronline-install.php on line 26

Lines 26 and 27 read:
foreach($sql as $query) {
$wpdb->query($query);

Anyone that can offer some help on this?
silvewing
running MySQL 4.0.25