can't initialize nat Table problem

[Twum.K.Djin@xxxxxxxxxxxxx (Twum K. Djin)]

Hello,

I'm sure this problem has been handled before. I'm new to iptables and I will like to use the nat table.

I tried to do "iptables -t nat -L"
and got the error:
iptables v1.3.1: can't initialize iptables table 'nat': Table does not exist (do you need to insmod?).

I did insmod iptable_nat and got a lot of errors about unresolved symbols:
iptable_nat.o, ip_ct_find_helper_R2e1adde3,... etc.

What am I doing wrong?

Thanks