[CentOS] (OT) i586 kernel

What incantations are used to build vmlzi586 and initi586.img found in the isolinux directory of the CentOS 4.3 DVD? I have an old K6-2 box that runs CentOS 4.3 fine but because of a few features, I'd really prefer to run FC5 on that machine and it won't install -- which is the reason for the (OT) in the subject. I found this blurb in the specs file: ---------------- %define KVERREL %{PACKAGE_VERSION}-%{PACKAGE_RELEASE}

# groups of related archs # Added i586 kernel support (CentOS-4) #%define all_x86 i686 %define all_x86 i586 i686

# Override generic defaults with per-arch defaults ------------------ but somehow, that seems like too much magic in a too-small package. There must be a lot more to it!