net-setup eth0 fails because 8139too module is not loaded. If I modprobe 8139too before running net-setup, all go fine. Keep on your good job.
<points you to your scrollback I have the same card and experienced the same thing It stops searching for the right driver at a certain point It gives an error message that there was a problem with a file It continues boot without 8139too support because it never gets to it I had to boot with the 1.4_rc1 cd to find out which one I should be using
latest experimentals have better detection hopefully this fixes it . www.gentoo.org/~livewire
try a newer livecd now