IPTables Errors

[Mazdaspeed6]

So im trying to setup a firewall to block some IP's trying to access my box. I installed IPTABLES and can start it but when trying to make any changes i get this error:
$this->bbcode_second_pass_code('', 'FATAL: Module ip_tables not found.
iptables v1.4.13: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.')

I saw this on another post but didnt see a a clear answer. I tried removing it and reinstalling but this had no effect.

[WarheadsSE]

Device?

[Mazdaspeed6]

POGO p21

[WarheadsSE]

*shakes head*
*points*
viewtopic.php?f=29&t=1410
*moves thread*

But.. I've manage to make some advancements on the 2.6.31.6 kernel & udev/initscripts so I'll be compiling it soon. Hopefully I can get as much as possible working.