DDNS and TZO HELLLLPPPPP

I have been banging my head against the wall trying to get this to work. I am on a Cisco 871w ISR. I have read the tutorials here on this site and I think they got me a little further but not far enough

I am not able to get my DDNS with TZO to work. Any help would be much appreciated.

Here is part of my config showing what I have done.

ip name-server 4.2.2.6
ip name-server 4.2.2.5
ip ddns update method sdm_ddns1
HTTP
add cgi.tzo.com/webclient/signedon.html?TZON...p;IPAddress=<a> ;
remove cgi.tzo.com/webclient/signedon.html?TZON...p;IPAddress=<a> ;
interval maximum 0 0 25 0
interval minimum 0 0 15 0


interface FastEthernet4
description $ETH-WAN$
ip ddns update hostname Iphotozz.com
ip ddns update sdm_ddns1
ip address dhcp
ip nat outside
ip virtual-reassembly