$query = mysql_query("INSERT INTO hostee_info (username, password, firstName, lastName, email, subdomain, host, location, radio1, radio2, forum, aboutus, message, checkbox)
VALUES ('$username', '$password', '$firstName', '$lastName', '$email', '$subdomain', '$host', '$location', '$radio1', '$radio2', '$forum', '$aboutus', '$message', '$checkbox')");
As for $row, I don't know what it's supposed to be but I believe it is smth like
$r = mysql_query("SELECT * FROM somewhere WHERE id = $id");
if (!mysql_num_rows($r)) die('Wrong ID!');
$row = mysql_fetch_assoc($r);