AchtungNate,
I am not sure prior to 4.2 on how it will look, but if you look within your MCS go to:
Configuration > Site > Features > Applications > Group Messaging
This is the functionality that you are looking for. I am sure it was on the Xarios product line so it should be there. Setting it up is pretty simple and it works great for all the customers I have set it up for.
Thanks,
TE