Ship To: <select name="shp">
<option>Select Shipping</option>
<option value="s1=0.00 s2=0.00 ">United Kingdom</option>
<option value="s1=7.00 s2=0.00">International</option>
</select>
<br/>
<br/>
<input type="image" src="
https://www.paypal.com//en_GB/i/btn/sc-but-03.gif" name="submit"
onclick="CalculateOrder(this.form)" alt="Make payments with PayPal - it's fast, free and secure!"/>
<input type="image" src="../images/viewcart.gif" alt="cart view"
onclick="document.forms.viewcart.target = 'paypal';
document.forms.viewcart.submit ();
return false;" />
<input type="hidden" name="add" value="1"/>
<input type="hidden" name="cmd" value="_cart"/>
<input type="hidden" name="business" value="<A href="mailto:sales@sjohnsonart.co.uk"/">
sales@sjohnsonart.co.uk"/>
<input type="hidden" name="item_name" value="Seven Sisters, Sussex"/>
<input type="hidden" name="item_number" value="CO150STD2. Seven Sisters, Sussex."/>
<input type="hidden" name="amount" value=""/>
<input type="hidden" name="handling" value="" />
<input type="hidden" name="handling_cart" value="" />
<input type="hidden" name="shipping" value="s1" />
<input type="hidden" name="shipping2" value="s1" />
<input type="hidden" name="no_note" value="1"/>
<input type="hidden" name="currency_code" value="GBP"/>
</form>
it seems to work when i tested it.
Forum 
