Networking the eMate

I am trying to see whether I can use a wireless or ethernet cardbus card with my Apple eMate 300. Many guides are no longer hosted on the net, except perhaps on The Wayback Machine. But in 2011 I found this: http://myapplenewton.blogspot.com/2008/08/going-wireless-setting-up-wifi.html and it looks promising.

An older guide here: http://old.chuma.org/newton/ethernet/