Thanks for the quick reply! ^^

The problem is there regardless of whether or not either window has current focus.
Both instances are accepting the keystrokes in the chatbox even when neither are the current focus.
(ex: Two Lunias running with chatboxes open, I open up a new .txt file and hit the "a" key - "a" shows up in the new text file and both Lunia chatboxes.)
That tells me that HKN is doing what it should be doing and winsendm is functioning correctly, so my uneducated guess would be that the program is expecting some other signal rather than the raw keystroke? It's a Korean MMO which has official clients in something like seven languages, which is why I asked about possible Unicode/ASCII output from HKN since I would think that would be easier for the devs to deal with international keyboards. I am just really hoping that it's not looking for DirectInput since dealing with that seems to involve me learning how to program and I am usually too medicated to handle any heavy thinking/memorization. ~_~