Ciao... vorrei creare una pagina web per inserire dei dati per poi memorizzarli in un file excel o txt come posso fare???

vi mando il listato del form....

<form name="form1" method="post" action="">

<h1><span class="Stile5">Lista chiamate</span></h1>
<p class="Stile2"></p>
<table width="396" border="0">
<tr>
<td width="73"><span class="Stile2">Data</span></td>
<td width="158"><span class="Stile2">
<input name="Data" type="text" id="Data2" value="=Date()" size="8">
</span></td>
<td width="25"><input type="radio" name="evento" value="HaChiamato"></td>
<td width="122"><span class="Stile2">
<label>Ha chiamato</label>

</span></td>
</tr>
<tr>
<td><span class="Stile2">Ora</span></td>
<td><span class="Stile2">
<input name="Ora" type="text" id="Ora2" value="=Time()" size="8">
</span></td>
<td><input type="radio" name="evento" value="EPassato"></td>
<td><span class="Stile2">
<label>E' passato</label>

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

</h2>
<table width="526" border="0">
<tr>
<td><span class="Stile2">Cognome</span></td>
<td><span class="Stile2">
<input name="cognome" type="text" id="cognome2">
</span></td>
<td><span class="Stile2">Societ&agrave;</span></td>
</tr>
<tr>
<td><span class="Stile2">Nome</span></td>
<td><span class="Stile2">
<input name="nome" type="text" id="nome2">
</span></td>
<td><span class="Stile2">
<input name="Societa" type="text" id="Societa2">
</span></td>
</tr>
</table>
<p class="Stile2">Note <textarea name="Note" cols="100" id="Note"></textarea>
<table width="661" border="0">
<tr>
<td width="133"><span class="Stile2">Numero di Tel</span></td>
<td width="174"><span class="Stile2">
<input name="NumeroTel" type="text" id="NumeroTel2" maxlength="10">
</span></td>
<td width="167"><span class="Stile2">Numero di Cel </span></td>
<td width="169"><span class="Stile2">
<input name="EMail" type="text" id="EMail2" maxlength="10">
</span></td>
</tr>
<tr>
<td><span class="Stile2">Numero di Fax</span></td>
<td><span class="Stile2">
<input name="Numerofax" type="text" id="Numerofax2" maxlength="10">
</span></td>
<td><span class="Stile2">Indirizzo E-mail </span></td>
<td><span class="Stile2">
<input name="NumeroTel4" type="text" id="NumeroTel42" maxlength="10">
</span></td>
</tr>
</table>



<label>
<input type="radio" name="modalita" value="Richiamare">
Richiamare</label>


<label>
<input type="radio" name="modalita" value="RichiamareCel">
Richiamare su Cel</label>


<label>
<input type="radio" name="modalita" value="Richiama">
Richiama</label>

Riferimento
<select name="Riferimento" id="Riferimento">
<option>Michele</option>
<option>Monica</option>
<option>Nicola</option>
</select>
</p>



<input type="submit" name="Submit" value="Invia">
<input type="reset" name="Submit2" value="Annulla">
</p>
</form>