well, this isn't for on join events though, this isn't even the join alias... it is from when a server forces you to join a channel.
i guess the syntax is the same, but with the exception that when i join a channel, it sends the raw event from me to the server, but when the server forces me to join a channel, it sends me the raw event. mirc does have a command for it though apparently, because it cooperates and opens the appropriate channel window.
my objective is to make it immediately part the channel that the server tries to force you to join. i don't know if it's possible, but i certainly dont see why you can have 2 ping replies, but only have one reply to a raw server event.