There is no libirrsi.dll or such thing so how it could load dll? note that the plugins isn't loadable module, it does depends/linked to Irssi (which has to be irssi.exe itself in windows unless it linked to irssi wholly). I decide go with Msys setup which should be straightforward and it is, except how the plugins works. Irssi however is dull without perl just like all irc client supposed to be but adding perl would be too big, too many files.

Now I'm back to focus on just the IRC part and let pidgin do YM task, the choice is clear: Irssi it also the most promising one to port than the two before. Previously I tried to port finch which failed and have been looking at centerim too which nowhere easier.