Primo blocco:

<table width="100%" border="0" cellspacing="0" cellpadding="0">


<tr>
<td height="25" valign="top"><input class="Form" name="struttura" type="radio" value="1" ONCLICK="document.all.1.style.display = (document.all.1.style.display == '') ? 'block' : ''"></td>
<td width="100%" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: left">Sede OIKYweb</div></td>
</tr>

<tr>
<td height="25" valign="top"><input class="Form" name="struttura" type="radio" value="2" ONCLICK="document.all.2.style.display = (document.all.2.style.display == '') ? 'block' : ''"></td>
<td width="100%" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: left">RG Pisteme</div></td>
</tr>

<tr>
<td height="25" valign="top"><input class="Form" name="struttura" type="radio" value="3" ONCLICK="document.all.3.style.display = (document.all.3.style.display == '') ? 'block' : ''"></td>
<td width="100%" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: left">TECHdata</div></td>
</tr>

</table>



Secondo blocco:

<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="280" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: right">Altre strutture coinvolte nel trattamento:</div></td>
<td valign="bottom" height="25" width="270">
<table width="100%" border="0" cellspacing="0" cellpadding="0">


<tr>
<td height="25" valign="top"><input class="Form" ID="1" STYLE="display:''" name="struttura_esterna1" type="checkbox" value="1"></td>
<td width="100%" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: left">Sede OIKYweb</div></td>
</tr>

<tr>
<td height="25" valign="top"><input class="Form" ID="2" STYLE="display:''" name="struttura_esterna2" type="checkbox" value="2"></td>
<td width="100%" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: left">RG Pisteme</div></td>
</tr>

<tr>
<td height="25" valign="top"><input class="Form" ID="3" STYLE="display:''" name="struttura_esterna3" type="checkbox" value="3"></td>
<td width="100%" height="25" valign="top"><DIV STYLE="FONT-SIZE: 11px; FONT-FAMILY: verdana; color: #000000; text-align: left">TECHdata</div></td>
</tr>

</table>


Naturalmente questo vale come esempio dato che il numero dei radio e delle check sono vriabili.