RE: Linksys WPC11 Binaries?

Everything worked fine until this step:

"If it errors with a statement that /usr/src/linux is incomplete or
missing, it will need the kernel source installed, kernel-headers and
kernel-source packages from your install CD, or from rhn or ftp if
you've upgraded your kernel."

In RH 8 it is not obvious how I get the source from RPM or otherwise. In
fact, as near as I can tell the gnorpm package isn't even installed. If you
can guide me this little bit further, I have hope for success. Would the
source be on one of the first three ISOs, or do I need to DL one of the
other ISOs, or get it from...

Thanks,
Ewan