unable to load iptables module

From: Baruah (b_baruah@hotmail.com)
Date: 12/12/01

From: b_baruah@hotmail.com (Baruah)
Date: 11 Dec 2001 22:43:55 -0800

        I have just upgraded my linux box to RedHat 7.2 in order to
use Iptable.
But I'm unable to load the module.

if i give the command modprobe ip_tables it gives the following
or resource busy.
/lob/modules/2.4.7-10/kernel/net/ipv4/netfilter/ip_tables.o failed

Thanks in advance to all who reply.