Battlemaster yes! but in order to get into the D'Hara chat room you need to double clik on D'Hara
/join #D'Hara
D'Hara... I think that the game defaults the channel to "D/Hara" or something like that. Pretty sure there's a slash or something in there. At least, until you change your defaults... Battlemaster handles "special" characters (non-letters) poorly.
I don't think #D'Hara, or any variations of it, sees much traffic on IRC. You will find D'Haran players on #battlemaster, though.