This is a suppliment document to a regular install.
In order to get the nic to work properly with the 2004.1 livecd we had to boot it like so...
gentoo-nofb pci=noacpi
http://h18004.www1.hp.com/products/quickspecs/11821_div/11821_div.HTML
http://h18004.www1.hp.com/products/quickspecs/11821_div/11821_div.HTML