It is already part of the latest released RHEL3 kernel from Red Hat;
rpm -qlip kernel-2.4.21-51.EL.i686.rpm | grep e1000
warning: kernel-2.4.21-51.EL.i686.rpm: Header V3 DSA signature: NOKEY, key ID 025e513b
/lib/modules/2.4.21-51.EL/kernel/drivers/net/e1000
/lib/modules/2.4.21-51.EL/kernel/drivers/net/e1000/e1000.o
Source for the kernel can be found here;
ftp://ftp.redhat.com/pub/redhat/linu...S/en/os/SRPMS/