Fine tuning Edubuntu

[Brad Thomas]

I have a default install of Edubuntu, and my clients are connecting 
without any problems.  However, there's two things that I need to get 
done before I can put this in a live environment:
1. I have 2 nics in the server.  One connects to the main network 
(eth1), and the other is for the Edubuntu lab that the clients connect 
through (eth0).  However, I need to figure out a way to prevent my 
client computers from being able to hit eth1, because I do not want them 
to be able to access my network.  How can I do this?
2. I am trying to figure out a way to remove applications from the menu 
that the clients will not (and should not) have access to.  I guess I'm 
looking for a KIOSK that will work with Gnome.  Any suggestions?

Thanks,
Brad