I am looking to highlight ONLY and ALWAYS when someone messages me via a query window (whenever they say something new and the window is not in focus, or when they message me for the first time). I DO NOT want channels and server windows to be highlighted on new text, JUST queries. Is this possible and if so, how?

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Thanks, but here's the problem. Even with "Always Highlight" turned off, it still highlights everything, always. So I have set it to a transparent color. I think that's the reason that script won't work. Is there any way around this?
Thanks again!