Very simple question, I hope...

I've just upgraded to Vista, and my old client doesn't work anymore. It had one feature that is absolutely essential to me, which is that the taskbar, at the bottom of Windows, flashes when there's MUX activity and I'm in another window. I've searched, but I can't find a way to make this happen. Is it possible? I know about triggers, but I don't really want a sound... I just want the task bar flashy again. This may also be something I haven't enabled in Vista, but either way, it's REALLY frustrating. Any ideas? Thanks!!

Please disregard my prior post. 'Duh' moment. *blush*

For the benefit of anyone else reading this:

World configuration -> Appearance -> Output -> "New activity flashes taskbar".