NIC Driver Missing after Kick-Start


When I installed Redhat 9 with CDROM on the machine with NIC bcm5700, the driver for bcm5700 was introduced to the system - I typed "linux dd", and then put in
the driver floppy. Everything was fine after installation - the driver bcm5700 was there, and loaded, and therefore NIC was configured and brought up.

However, I try kickstart on the machine today. It is almost fine, except that, the NIC driver is not configured on the system.

I have tried kickstart through http, ftp and nfs. And, the kickstart config is put on floppy or a NFS server. The outcomes are the same. The network is up during the installation, so the installation goes well. After the final reboot, the
driver bcm5700 is not there at all. /etc/modules.conf is modified by the installation, and the line is added 'alias eth0 bcm5700". But no driver modules for bcm5700. FYI, I boot the system with an installation floppy and ks.cfg is located
on the NIC driver floppy. The command I use is "linux dd ks=floppy"

I wonder whether it is a driver issue (not build well), or a kick-start issue (its shortage or my mistake). The following is my kickstart configuration:
----- beginning of ks.cfg -----------------
install
# url --url ftp://192.168.16.210/pub/INSTALL/
nfs --server=192.168.16.210 --dir=/var/ftp/pub/INSTALL/
lang en_US.UTF-8
langsupport --default en_US.UTF-8 en_US.UTF-8
keyboard us
mouse genericwheelps/2 --device psaux
skipx
rootpw --iscrypted $1$pDdff8/$aVOofdsfEpDScvlEjohA3c2x/
firewall --disabled
authconfig --enableshadow --enablemd5
network --bootproto=dhcp --device=eth0
timezone Asia/Shanghai
bootloader --location=mbr
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clear all partitions first, this is
# not guaranteed to work
clearpart --all
part / --fstype ext3 --size=1 --grow --ondisk=hdd
part swap --size=512 --ondisk=hdc

%packages
@ Dialup Networking Support
-statserial
-isdn4k-utils
-ghostscript
-setserial
kernel-smp
-Omni
-ghostscript-fonts

%post
PATH=/bin:/sbin:/usr/bin:/usr/sbin
cp -a /etc/issue /etc/issue.installed
cp -a /etc/issue.net /etc/issue.net.installed
hostname > /etc/issue
hostname > /etc/issue.net
----- end of ks.cfg -----------------

Please let me know if any information I miss out. Thank you.

BTW, the driver bcm5700 can be installed manually after the O.S. installation.