about window id ...
it would be nice to make an option in the nest verison with /msg and /notice with wid ..

why....

seems dcc chat aint support multy nick option but u can get he window id by $chat(nick,N).wid with this u can easly separate the nicks even if they are the same nick..

It is rather frustrating how useless windows id's are and how useful they could be. There should really be a built-in function to resolve them. /say and /me send messages to the current wid so something like this could work.

/swid <window-id> <command>
/swid 6 me is sending a /me message to the window with id 6.
(similar to /scid).

I'm not sure about sending notices though--it's impossible to send a notice based on the current window or to a dcc chat...and I don't see why you'd want to.