argv0 is right multithread support is a beast at any point in an applications life however an established app like mIRC it is an all but impossible feat...
I agree that it is not worth it mostly because of the instability it would cause there are so many checks you haveta make when using multiple threads to make sure data isnt being changed by multiple things etc... the closest to multi threading we have is $comcall and $dllcall which are awsome in their own right so if i was you i would put the code i wan t in a dll and then do $dllcall (:
