Hey, I had this problem! same NIC, but then I came to realize that (from previous Linux experience) the module needed for those NICs were not in the installation. So then I just changed to PCI NICS (my last two) and then everything worked. If you know enough Linux you might be able to install the correct modules for those nics. The 3C90x and 3C59x options will not work. Hope that helped out some.
Troy