SuSE 7.2 IPCHAINS and IPTABLES with SuSE Kernel 2.4.4

I have installed SuSE7.2 (2.4 kernel) with iptables. First of all ipchains was installed instead of iptables. I corrected this problem but now I run into problems when I run the commands "services" or "openports". Services doesn't do anything at all and openports gives the following error " ipchains produced errors, no default routing set up? " Ipchains is no longer installed and I do have a default route. I'm using iptables and would like to know how I can fix this problem. Regards, Jay