I have made a shopping cart using Paypal the only thing wrong with it is that it doesn't send anything to the seller alerting him that someone made a purchase.
the website is
www.ultimatgolf.com
Here is the code.
<form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<table width="195">
<tr>
<td><input type="hidden" name="on0" value="22" X 30" UltiMat">
22" X 30" Small</td>
<td><input name="os0" type="text" size="5" maxlength="30"></td>
</tr>
</table>
<input type="image" src="https://www.paypal.com/en_US/i/btn/x-click-but22.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="dnimmo@turfvisions.com">
<input type="hidden" name="item_name" value="22" x 30" UltiMatGolf">
<input type="hidden" name="amount" value="99.00">
<input type="hidden" name="shipping" value="15.00">
<input type="hidden" name="shipping2" value="10.00">
<input type="hidden" name="page_style" value="Primary">
<input type="hidden" name="return" value="http://www.ultimatgolf.com/index.html">
<input type="hidden" name="cancel_return" value="http://www.ultimatgolf.com/contact.html">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="lc" value="US">
<input type="hidden" name="bn" value="PP-ShopCartBF">
</form>