thanks for your reply.
this is what the msn server sends back.
-> TK2KCHATA01 nickname!something@GateKeeperPassport JOIN H,U,RX :%#chatroom
all people on there with mirc just have to use the way you suggested. sockets to edit the raw data being sent.
if i connect the normal way without sockets mIRC is not able to join the chatroom, because it thinks "H" is the channel.
also within the 353 numeric it's sending some data that needs to be filtered out to display the nicklist correctly.
with a way to edit the raw data before mIRC processes it, would fix that, plus make mIRC more dynamic.