[https://wrenhunt.homelinux.org/homepage/cacert.html Wren's CAcert Stuff]
[http://spaces.msn.com/members/senorcarlao/Blog/cns!1pJrOOijO2CXQgbQCAQ6t4iw!136.entry Carlos Pereira's Root Certificate Installation on Internet Explorer Tutorial (In Portuguese)]
Root Certificate distribution through ActiveDirectory
[:Gemplus:Howto] on setting up a Gemplus Twin and Gemsafe PKI card under Ubuntu or Debian with Firefox and Thunderbird signing.