[syslinux] building initrd.img with updated drivers

[Warren Harris]

Can someone point me to instructions on how to build a 
pxeboot/initrd.img with updated drivers. I would like to pxe boot and 
install rh8 on a newer machine, and the pxeboot files that come with rh8 
(2.4.20-8) don't support my e1000 NIC. I believe that the newer 
2.4.20-28.8 drivers will, but I'm having trouble finding instructions in 
rebuilding the pxeboot initrd.img + vmlinuz to include them. Thanks,

Warren