It appears the dAmn service uses a completely separate network from the IRC network listed in mIRC's server list (although they're both run by DeviantArt). It's quite simple to discover the server and port being used by dAmn, but it is also clear that they don't want anyone using it with clients other than their own. Attempting to connect with mIRC causes this response from the server:
Of course the first part isn't really true, it quite clearly is an IRC server, at least at heart. But it seems they've modified the connection procedure to prevent the casual user from connecting with regular IRC clients. If you're determined then I'm sure it is possible to figure out the altered connection protocol using a packet sniffer. But that's quite an involved process and not something anyone here can teach you how to do. In any case, even if you were to connect it seems the dAmn Java client sends messages as HTML, meaning you'd have to do some scripting in mIRC just to make messages readable.
To sum up, it's probably a lot more trouble than it's worth. Especially given that it would likely only be a matter of time before the school network admins realised what was happening and blocked mIRC.
