Josemi... este es el codigo que ultilice en form.
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<form method=post action="thanks.php"><table width="400" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="108"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Su Nombre:</font></td>
<td width="192">
<input type="text" name="name">
</td>
</tr>
<tr>
<td width="108"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Su E-mail:</font></td>
<td width="192">
<input type="text" name="thereemail">
</td>
</tr>
<tr>
<td width="108" valign="top"><font size="2" face="Verdana, Arial, Helvetica, sans-serif">Su
Mensaje:</font></td>
<td width="192">
<textarea name="message"></textarea>
</td>
</tr>
<tr>
<td width="108"> </td>
<td width="192">
<input type="submit" name="Submit" value="Enviar Mensaje">
</td>
</tr>
</table>
</form>