If you go to www.xfce.org, then go to their overview page. It lists all the components of Xfce by package and gives a brief description of what it does. You could then install those packages off the cd. Not a convenient way of doing it, but you'll get everything you need.
here is the bug report for anyone interested: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=122745
-- nicu
