it "looks" as though the new value should submit on change:
<td class="eC_SummaryLabel">Shipping</td>
<td>$8.65 <select name="shipSelect" id="shipSelect" onchange="document.getElementById('checkoutForm').submit()" >
<option value="8.65" selected="selected">Ground $8.65</option>
<option value="16.93" >2nd Day Air $16.93</option>
</select>
</td>
Though no update is happening...
Firebug console is stating: " document.getElementById("checkoutForm") is null "