Soccermania script

<div class="block margin">
					<h3><span class="left"></span>Registreren</h3>
					<div class="padding-x">
						<p>
<?
$aError = array();
if (!is_loggedin()) {
    $sQuery5 = 'SELECT * FROM users WHERE IP = "' . $_SERVER['REMOTE_ADDR'] . '"';
    $iResult5 = mysql_query($sQuery5);
    if (mysql_num_rows($iResult5) == 0) {
        if (isset($_POST['registreren'])) {
            $sName = mysql_real_escape_string($_POST['username']);
            $sPassword = mysql_real_escape_string($_POST['password']);
            $sPassword2 = mysql_real_escape_string($_POST['password2']);
            $sEmail = $_POST['email'];
            $sEmail2 = $_POST['email'];
            $sVoornaam = $_POST['voornaam'];
            $sTussenvoegsels = $_POST['tussenvoegsels'];
            $sAchternaam = $_POST['achternaam'];
            $sGeboortedatum = $_POST['dag'] . '-' . $_POST['maand'] . '-' . $_POST['jaar'];
            $sWoonplaats = $_POST['woonplaats'];
            $sSpeler = $_POST['speler'];
            $sClub = $_POST['club'];


            $sQuery = 'SELECT name FROM users WHERE name="' . $sName . '"';
            $iResult = mysql_query($sQuery);
            $iRows = mysql_num_rows($iResult);


            $sQuery7 = 'SELECT email FROM users WHERE email = "' . $sEmail . '"';
            $iResult7 = mysql_query($sQuery7);