That doesn't seem to work, either Lindrian.
What I have is a dialog that opens up and then docks to the top of my mIRC window. When this happens, if I'm typing a message in a channel, my cursor focus goes to that dialog and I can't finish my message that I was typing.
I just tried adding window -a #TG007 to the dialog init, but that didn't work... I also tried minimizing the dialog once it opened and after it docked, that didn't work either.