Guys/Gals, You are missing the point here. The beta just released is a substituto to IMs such as ICQ/MSN but with the advantage that the server run in a system which is comtrolled by a given company. That is, the workers of such company can still enjoy the benefits of IMs in a enterprise level without both the spam from a global server as well as the extra security that messages are not sent outside of a given network (except if some client is outside of it, but it would still not go to a public server).
So, RAdmin as we know with versions 2.2 then 3.0 beta is one product for remote handling of a system while the new product RCS and RCC is a substitute for general IMs in a controlled enterprise level. So, please do get to know what you are actually testing so that we get to ask/reply on the pertinent topic
So, in the original topic of this thread the idea would be to have the server running in a given system in the enterprise and all clients connected through such server. If, however, one wishes to test the features using just two computers it can be done, as long as one of them act up as a server, but the real thing would be to have both connected through a dedicate (or not) server. A web server (or file server) in an enterprise could make up an excelent server for RCS wheer RCCs would connect through.
I do hope this helps to clears things up