Prism54 on SMC2802 PCI card

I'm using Red Hat Linux 9 distribution and I want to install the SMC2802W
wireless PCI card. I unpacked the latest tarball
(prism54-cvs-latest.tar.bz2) and tried to compile (following the README
instructions). I had to get the "kernel-source-2.4.20-8.i386.rpm" from
"redhat.com" (cause I had the 2-disk release...).

When compiling the tarball with "make KDIR=/usr/src/linux-2.4.20-8 clean
modules" I have a missing file "linux/firmware.h"... error.

I tried to copy a "firmware.h" file from another kernel source tree that I
have. The same compilation leads to the following error: "Firmware Loading
is not configured in the kernel!"

I tried to activate "Library routines---> Hotplug firmware loading support"
using the "make menuconfig" command....but it cannot be set (pressing
"enter" on the "Library routines" line doesn't change anything).

What do I do next??? Is there a patch to install in order to have the
"firmware" services??? Should I use another "kernel-source" RPM.??? Is there
another way to make the card work???

Thanks for any useful info...

Mario