insmod: error

I am trying to bond nics in RHES4 and when following directions from http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/ref-guide/s1-modules-ethernet.html#S2-MODULES-BONDING. When entering the following command /sbin/insmod ifcfg-bond0 mode=3, I get the following error message “insmod: error inserting ‘ifcfg-bond0’: -1 Invalid module format”, any help with would greatly appreciated. Thx