[tproxy] patch for iptables 1.4.1.1

hi all, i am new for tproxy, i have compile kernel 2.6.28 with tproxy support and i have squid 2.7.5 and both have already support tproxy. my question is where can i get patch for iptables-1.4.1.1 bcoz iptables not support tproxy yet, and there is no patch on official download site (i.e. http://www.balabit.com/downloads/files/tproxy/) for iptables-1.4.1.1, please guide me thanks in advance sonu..