I think that might be useful to put this link: http://forums.gentoo.org/viewtopic.php?t=43025 somewhere in the Installation Guide to point non-network users to some useful hints.
If there are no concerns, I'll edit the install doc in a day or two to include the link.
Added the following to "Chapter 4. Configuring Networking": <section> <title>I don't have networking!</title> <body>If you don't have networking there is some help in the <uri link="http://forums.gentoo.org/">Gentoo Forums</uri>. Some useful links can be found at <uri>http://forums.gentoo.org/viewtopic.php?t=43025</uri>. </body> </section>