I need help adding Shipping to Paypal

[shutterbug]

Here is what I have:

<form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post" name="myform" onsubmit="CalculateOrder ();">



<input type="hidden" name="add" value="1">

<input type="hidden" name="cmd" value="_cart">

<input type="hidden" name="business" value="youremail@gmail.com">

<input type="hidden" name="item_name" value="prints">

<input type="hidden" name="item_number" value="&#37;TITLE%-%FILENAME%">

<input type="hidden" name="amount">



	

<input type="hidden" name="on0" value="Size">

<select name="os0">
	<option value="-" amount="0.00">- - - Select - - -
	<option value="5x7">5x7 $4.50
	<option value="8x10">8x10 $9.00
	<option value="11x14">11x14 $12.00
	<option value="12x16">12x16 $16.00
	<option value="16x20">16x20 $20.00
	<option value="Canvas 11x14">Canvas 11x14 $88.00</option>
	<option value="Canvas 16x20">Canvas 16x20 $113.00</option>
	<option value="Canvas 8x10">Canvas 8x10 $63.00</option>

</select>

</div> <br><br><br>
</td>


<td width="100"><div class="select">


<!-- Beginning of Options Menu -->

<input type="hidden" name="on1" value="Options">

<SELECT name="os1">

<OPTION value="color">Color</OPTION>

<OPTION value="Black & White">B&W</OPTION>

</SELECT>

<!-- End of Options Menu -->
</div> <br><br><br>
</td>


<td width="100" ><div class="button"><br>

<input type="image" src="../images/addtocart.gif" name="submit" alt="add to cart"><br><br><br>

<input type="hidden" name="currency_code" value="USD">

<INPUT TYPE="hidden" name="weight_cart" value="2.00">
<INPUT TYPE="hidden" name="weight_unit" value="lbs">
<input type="hidden" name="lc" value="US">

<input type="hidden" name="bn" value="PP-ShopCartBF">
</div>

</td>

<td width="100"><div class="button">

<form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">

<input type="hidden" name="cmd" value="_cart">

<input type="hidden" name="business" value="youremail@gmail.com">

<input type="image" src="../images/viewcart.gif" name="submit" alt="View Shopping Cart"><br><br>

<input type="hidden" name="display" value="1">

<input type="hidden" name="page_style" value="Primary">
</form>
</div>

I would like to add a shipping charge of 1.50 per item. Any help or ideas is much appreciated.