mensajes en foro

hoal he cogido este codigo para foro y querria saber que tengo que poner para que acepte mensajes solo de gente que pone su correo :o
perdon .falta el codigo,ahi va:(lo estoy remodelando)

<html>
<head>
<title>Foro de MUSIKEHANDO</title>
<meta http-equiv="Pragma" content="no-cache">

<style type="text/css">
img {border: 0}
body,td {font-family: Times, "Times New Roman", Georgia, serif; font-size: 10pt; color: #000000}
select,input {font-family: Times, "Times New Roman", Georgia, serif; font-size: 10pt}
textarea {font-family:font-family: Times, "Times New Roman", Georgia, serif; font-size: 10pt}
a:link, a:visited {color: #0099FF; text-decoration: none}
a:hover, a:active {color: #DC4600; text-decoration: underline}
</style>

</head>

<body bgcolor="#FFA500" text="#404040" topmargin="0" leftmargin="0" marginwidth="0" marginheight="0">

<center>
<table width="100%" border="0" cellspacing="0" cellpadding="7">
<tr bgcolor="#306090">
<td width="50">[contenido no disponible]</td>
<td>
<b style="color: #FFFFFF; font-size: 12pt">

<b style="color: #FFFFFF; font-size: 18pt">MUSIKEHANDO
</td>
<td align="right" valign="bottom">
[contenido no disponible]
[contenido no disponible]
[contenido no disponible]
</td>
</tr>
<tr>
<td height="5" colspan="3" valign="bottom" background="http://musikehando.getenjoyment.net/html/objetos/dibujo.bmp">


<table width=100% valign="bottom" border="0" cellspacing="2" cellpadding="2">
<tr>
<td>







</td>
<td align="right" valign="middle">
<form method="get" action="/app">
<input type="hidden" name="ID" value="prueba-melodyimg">
<input type="hidden" name="do" value="chparms">
<input type="hidden" name="DOC" value="1">


Mostrar últimos <input type="hidden" name="PREVMAXMSGS" value="10"><select name="MAXMSGS" size="1" style="font-family:Times, "Times New Roman", Georgia, serif ; font-size: 8pt"><option selected value="10">10</option>
<option value="20">20</option>
<option value="50">50</option>
<option value="100">100</option>
<option value="150">150</option>
<option value="200">200</option>
<option value="1000">1000</option>
</select>
Ordenado por <select name="ORDERBY" size="1" style="font-family: Times, "Times New Roman", Georgia, serif; font-size: 8pt;"><option selected value="0">Fecha Raíz</option>
<option value="1">Fecha Hilo</option>
<option value="2">Autor</option>
<option value="3">Asunto</option>
</select>

<input type="submit" value="Aplicar">
</form>
</td>
</tr>
</table>




</td>
</tr>
</table>






<center>
<div id="mlbanner">

<table cellspacing="0" cellpadding="0" border="0" width="728" height="90"><tr>
<td valign="middle" align="center" border="0" width="728" height="90">
<script language="JavaScript">
if(typeof(adlink_randomnumber)=="undefined"){var adlink_randomnumber=Math.floor(Math.random()*10000000000)}
document.write('<scr'+'ipt language="JavaScript" src="http://ad.es.doubleclick.net/adj/melodysoft.es/otros;dcopt=ist;sz=7…'+adlink_randomnumber+'?"><\/scr'+'ipt>');
</script><noscript>
</a></noscript></td></tr></table>

</div>
</center>











<table width="97%" bgcolor="#306090" border="0" cellspacing="0" cellpadding="6">
<tr>
<td><b style="color: #FFFFFF; font-size: 10pt">Mensajes</td>
</tr>
<tr>
<td height="5" bgcolor="#EFEFEF" background="http://images.melodysoft.com/bg_blue-whitem.gif"></td>
</tr>
<tr>
<td bgcolor="#EFEFEF">

<script language=JavaScript>
function msghref(nMsg) {
document.write('<a href=\"/app?ID=prueba-melodyimg&msg=' + nMsg + '&MAXMSGS=10&ORDERBY=0&DOC=1');
}

</script>

<ul>



</td>
</tr>
</table>




<table width="97%" border="0" cellspacing="0" cellpadding="6">
<tr>
<td bgcolor="#EFEFEF" align="center">«« Mensajes 1 - 10 de 10 - 1 - « »</td>
</tr>
</table>



<a name="addmsg">
<table width="80%" bgcolor="#EFEFEF" border="0" cellspacing="0" cellpadding="6">
<tr>
<td bgcolor="#306090"><b style="color: #FFFFFF; font-size: 10pt">Añadir mensaje</td>
<td align="right" bgcolor="#306090">[contenido no disponible]</td>
</tr>
<tr>
<td colspan="2" height="5" background="http://images.melodysoft.com/bg_blue-whitem.gif"></td>
</tr>
<tr>
<td colspan="2" align="center">

<script language="javascript" type="text/javascript">
function Verificar(){
if(document.frm.nombre.value==""){alert("Debes indicar un nombre");document.frm.nombre.focus();return false}
if(document.frm.subject.value==""){alert("Debes indicar un asunto");document.frm.subject.focus();return false}
return true;
}
</script>

<form name="frm" method="post" action="/app" onSubmit="return Verificar()">

<input type="hidden" name="ID" value="prueba-melodyimg">
<input type="hidden" name="rsp" value="0">
<input type="hidden" name="MAXMSGS" value="10">
<input type="hidden" name="ORDERBY" value="0">
<input type="hidden" name="DOC" value="1">


<table border="0" bgcolor="#EFEFEF" cellspacing="5">
<tr>
<td align="right">Nombre:</td>
<td><input type="text" name="nombre" value="" size="65" maxlength="40"></td>
</tr>
<tr>
<td align="right">E-Mail:</td>
<td><input type="text" name="email" value="" size="65"></td>
</tr>
<tr>
<td align="right">Asunto:</td>
<td><input type="text" name="subject" value="" size=65 maxlength="250"></td>
</tr>
<tr>
<td align="right">Web:</td>
<td><input type="text" name="link" value="http://" size="65"></td>
</tr>
<tr>
<td align="right">Enlace a una
imagen:
</td>
<td><input type="text" name="Imagen" value="http://" size="65"></td>
</tr>
<tr>
<td></td>
<td>
<input type="checkbox" value="checked" name="bNotificar" id="bNotificar">
<label for="bNotificar">Notificar por e-mail respuestas.</label>
</td>
</tr>
</table>


<table border="0">
<tr>
<td width="125" nowrap align="center" valign="top">


<select name="img_msg" onChange="if(this.value=='') document.frm.mimg.style.display='none';else{document.frm.mimg.style.display=''; document.frm.mimg.src='http://www.melodysoft.com/images/imgmsg/'+this.value+''}">
<option value="">(sin imagen)</option>
<option value="abuela.gif">Abuela</option>
<option value="adaneva.gif">Adán y Eva</option>
<option value="alien.gif">Alien</option>
<option value="angel.gif">Ángel</option>
<option value="ardiendo.gif">Ardiendo</option>
<option value="baloncesto.gif">Baloncesto</option>
<option value="bombero.gif">Bombero</option>
<option value="boxeo.gif">Boxeo</option>
<option value="buho.gif">Buho</option>
<option value="buitre.gif">Buitre</option>
<option value="buzo.gif">Buzo</option>
<option value="camello.gif">Camello</option>
<option value="cantante.jpg">Cantante</option>
<option value="ciegos.gif">Ciegos</option>
<option value="cocinando.gif">Cocinando</option>
<option value="correr.gif">Correr</option>
<option value="cruedas.gif">4 ruedas</option>
<option value="davidgoliath.gif">David y Goliath</option>
<option value="diablo.gif">Diablo</option>
<option value="disparando.gif">Disparando</option>
<option value="ensena.gif">Enseña</option>
<option value="esqui.gif">Esquí</option>
<option value="esquimal.gif">Esquimal</option>
<option value="estacion.gif">Estación</option>
<option value="fiesta.jpg">Fiesta</option>
<option value="futbol.gif">Fútbol</option>
<option value="gimnasia.gif">Gimnasia</option>
<option value="hablando.gif">Hablando</option>
<option value="hada.gif">Hada</option>
<option value="jugando.gif">Jugando</option>
<option value="jugando2.gif">Jugando 2</option>
<option value="lobo.gif">Lobo</option>
<option value="luke.jpg">Luke</option>
<option value="marinero.gif">Marinero</option>
<option value="medusa.gif">Medusa</option>
<option value="monja.gif">Monja</option>
<option value="moto.gif">Moto</option>
<option value="muerte.gif">Muerte</option>
<option value="mujer.gif">Mujer</option>
<option value="mujer.jpg">Mujer 2</option>
<option value="ok.jpg">Ok</option>
<option value="ordenador.gif">Ordenador</option>
<option value="pato.gif">Pato</option>
<option value="payaso.gif">Payaso</option>
<option value="pesas.gif">Pesas</option>
<option value="pez.gif">Pez</option>
<option value="pinguino.gif">Pingüino</option>
<option value="pirata.gif">Pirata</option>
<option value="podium.gif">Podium</option>
<option value="poli.gif">Poli</option>
<option value="princesarana.gif">Princesa</option>
<option value="rana.gif">Rana</option>
<option value="riendo.gif">Riendo</option>
<option value="rock.gif">Rock</option>
<option value="spinning.gif">Spinning</option>
<option value="superwoman.gif">SuperWoman</option>
<option value="surfer.gif">Surfer</option>
<option value="tiburon.gif">Tiburón</option>
<option value="tingo.gif">Tingo</option>
<option value="trabajo.gif">Trabajo</option>
<option value="tumba.gif">Tumba</option>
<option value="ukulele.jpg">Ukelele</option>
<option value="vikinga.gif">Vikinga</option>
</select>


[contenido no disponible]
</td>
<td align="center" valign="top">
<b style="font-size: 9pt">Mensaje

<textarea name="mensaje" wrap="virtual" cols="64" rows="16"></textarea>



</td>
</tr>
</table>


<input type="submit" value=" Añadir " >
<input type="reset" value=" Borrar " >


<input type="checkbox" value="checked" name="showpostedmsg" id="showpostedmsg">
<label for="showpostedmsg">Ver mi mensaje despues de insertarlo.</label>

</form>

</td>
</tr>
</table>


</center>


<script language="JavaScript">
function MWOpen(pag){
window.open("http://www.melodysoft.com/popups/"+pag+".html","info","top="+(screen.height-400)/2+",left="+(screen.width-630)/2+",width=630,height=400,location=no,status=no,resizable=yes,scrollbars=yes,menubar=no,toolbar=no");
}
</script>

<center><font face="Arial" size=-2>Pincha </a>

<a href="http://www.melodysoft.com/adfree/?service=boards&id=148841" target="_blank">
Elimina la publicidad en este foro contratando bonos AdFREE de Melodysoft</a>
</font></center>



</body>
</html>