Masquerading and GnomeMeeting + ARGO

How to use GnomeMeeting with masquerading and without the problems of NAT?
My colleague released today a new version of RSIP. RSIP is a full alternative to the NAT that doesn't rewrite the packets. It works with GnomeMeeting without any effort. Client and server are available at: http://openresources.info.ucl.ac.be/rsip/.
Our ILS server argo.dyndns.org is currently down. It should be back in the next hours. Please try to use it and to register on it if you are using GnomeMeeting. Thanks.
Update: argo.dyndns.org is back, please register on it.