DDclient and DynDNS

Dear all, I have a SuSE8.1 fully patched box which connects to the internet and received a dynamic IP from its ISP. In order to always be able to connect to this box whenever it is on line I have created an account in dyndns and have assigned the dynamic IP configuration as stated. Downloaded the client ddclinet from their site and configured as much as I could... However the system doesn't seem to update the IP through the configuration file. Can someone explain to me how this file is supposed to be setup or perhaps a different site that will do the same things for me but with much less work?? Thanks all! Chris